https://sierra.dev.watchers.news/ https://sierra.dev.watchers.news Thu, 30 Jul 2026 21:55:00 +0000 2026/432-SANTA-MARIA-342030-20260730/2155Z VA ADVISORY DTG: 20260730/2155Z VAAC: WASHINGTON VOLCANO: SANTA MARIA 342030 PSN: N144500 W0913300 AREA: GUATEMALA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/432 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: PSBL VA EMS. OBS VA DTG: 30/2130Z OBS VA CLD: SFC/FL130 N145600,W0920100 N144600,W0913200 N144400,W0913300 N144800,W0920300 N145600,W0920100 FCST VA CLD +6H: SFC/FL130 N145900,W0920500 N144600,W0913200 N144400,W0913200 N145200,W0920700 N145900,W0920500 FCST VA CLD +12H: SFC/FL130 N145700,W0920500 N144600,W0913300 N144400,W0913300 N145000,W0920700 N145700,W0920500 FCST VA CLD +18H: - RMK: VA NOT OBSD BY EITHER STLT OR WEBCAM DUE TO WX CLD CVR OBSCG VIEW. VA LAST OBSD ABT 5 HOURS AGO WHEN WX CLD CVR DVLPD. NWP MDLS FCST ANY VA PRESENT TO MOV WNW THRU T+12HRS. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20260731/0400Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 21:37:00 +0000 2026/014-SHISHALDIN-311360-20260730/2137Z VA ADVISORY DTG: 20260730/2137Z VAAC: ANCHORAGE VOLCANO: SHISHALDIN 311360 PSN: N544500 W1635800 AREA: ALEUTIAN ISLANDS SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/014 INFO SOURCE: PIREP/AVO AVIATION COLOR CODE: - ERUPTION DETAILS: VA NOT IDENTIFIABLE FM SATELLITE DATA. OBS VA DTG: 30/2137Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: NO ERUPTION OR VA DETECTED. A NEW ADVISORY WILL BE ISSUED IF VA IS DETECTED IN SATELLITE IMAGERY....SC NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 20:59:00 +0000 2026/760-REVENTADOR-352010-20260730/2059Z VA ADVISORY DTG: 20260730/2059Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S000500 W0773900 AREA: ECUADOR SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/760 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: PSBL VA EMS. OBS VA DTG: 30/2040Z OBS VA CLD: SFC/FL140 N000400,W0775600 S000500,W0773900 S000500,W0773900 N00000,W0775900 N000400,W0775600 FCST VA CLD +6H: SFC/FL140 N000500,W0775600 S000400,W0773900 S000500,W0774000 N000000,W0775900 N000500,W0775600 FCST VA CLD +12H: SFC/FL140 N000700,W0775500 S000400,W0773900 S000500,W0773900 N000100,W0775900 N000700,W0775500 FCST VA CLD +18H: - RMK: VA NOT OBSD BY EITHER STLT OR WEBCAM DUE TO BKN WX CLD CVR. NWP MDLS SUG ANY VA IS MOVG WNW WITH LTLCG FCST THRU T+12HRS. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20260731/0300Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 20:13:00 +0000 2026/30-ETNA-211060-20260730/2013Z VA ADVISORY DTG: 20260730/2013Z VAAC: TOULOUSE VOLCANO: ETNA 211060 PSN: N374400 E0145900 AREA: SICILY VOLCANIC PROVINCE SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/30 INFO SOURCE: VONA,SAT IMAGERY, WEBCAM AVIATION COLOR CODE: red ERUPTION DETAILS: ERUPTION AT 20260730/1732Z ERUPTION ONGOING, ASH OBS VA DTG: 30/1900Z OBS VA CLD: SFC/FL230 N374800,E0145700 N373800,E0150300 N364200,E0131200 N370800,E0130300 N374800,E0145700 FCST VA CLD +6H: SFC/FL230 N374800,E0150000 N372700,E0150300 N363300,E0143000 N361200,E0134800 N370300,E0135400 N374800,E0150000 FCST VA CLD +12H: SFC/FL000 N374200,E0145700 N374500,E0150300 N352700,E0144200 N360300,E0135400 N370300,E0143000 N374200,E0145700 FCST VA CLD +18H: SFC/FL230 N374800,E0150000 N360600,E0145400 N351800,E0142100 N353600,E0135400 N362300,E0134800 N374800,E0150000 RMK: SMALL PLUME CLEARLY IDENTIFIABLE FM SATELLITE DATA DRIFTING SOUTHWESTWARD MOST SIGNIFICANT ASH LOCATED IN THE VICTINY OF THE VOLCANO. NXT ADVISORY: NO LATER THAN 20260731/0100Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 19:20:00 +0000 2026/866-SEMERU-263300-20260730/1920Z VA ADVISORY DTG: 20260730/1920Z VAAC: DARWIN VOLCANO: SEMERU 263300 PSN: S080600 E1125500 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/866 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL150 REP AT 30/1740 MOV NE OBS VA DTG: 30/1900Z OBS VA CLD: SFC/FL150 S080800,E1125300 S080400,E1125200 S074800,E1130700 S080500,E1131500 MOV NE 5KT FCST VA CLD +6H: SFC/FL150 S080800,E1125300 S080400,E1125200 S075000,E1131000 S080700,E1131400 FCST VA CLD +12H: SFC/FL150 S080800,E1125300 S080400,E1125200 S075300,E1131100 S080900,E1131200 FCST VA CLD +18H: SFC/FL150 S080800,E1125300 S080400,E1125200 S075300,E1131100 S080900,E1131200 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET CLOUD. MULTIPLE GROUND REPORTS INDICATE INTERMITTENT VA ERUPTIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260731/0120Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 18:28:00 +0000 2026/334-PURACE-351060-20260730/1828Z VA ADVISORY DTG: 20260730/1828Z VAAC: WASHINGTON VOLCANO: PURACE 351060 PSN: N021900 W0762400 AREA: COLOMBIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/334 INFO SOURCE: GOES-19. VONA. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: OCNL VA EMS. OBS VA DTG: 30/1800Z OBS VA CLD: SFC/FL190 N023700,W0770500 N022000,W0762300 N021800,W0762400 N022900,W0770700 N023700,W0770500 FCST VA CLD +6H: SFC/FL190 N025300,W0774700 N021900,W0762300 N021800,W0762400 N024200,W0775200 N025300,W0774700 FCST VA CLD +12H: SFC/FL190 N025200,W0774700 N022000,W0762300 N021800,W0762400 N024100,W0775200 N025200,W0774700 FCST VA CLD +18H: SFC/FL190 N025300,W0774700 N021900,W0762300 N021800,W0762400 N024200,W0775200 N025300,W0774700 RMK: VA CLD OBSD BTWN 30 AND 45 NMI WNW OF SUMMIT. VA CLD EARLIER OBSD TO ABT 90 NMI WNW OF SUMMIT BFR DSIPTG. MULT VONAS RCVD SINCE PREV ADVY. NWP MDLS FCST LTLCG IN WINDS THRU T+18HRS. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20260731/0030Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 18:01:00 +0000 2026/29-ETNA-211060-20260730/1801Z VA ADVISORY DTG: 20260730/1801Z VAAC: TOULOUSE VOLCANO: ETNA 211060 PSN: N374400 E0145900 AREA: SICILY VOLCANIC PROVINCE SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/29 INFO SOURCE: VONA,SAT IMAGERY, WEBCAM AVIATION COLOR CODE: red ERUPTION DETAILS: ERUPTION AT 20260730/1732Z ERUPTION ONGOING, ASH OBS VA DTG: 30/1750Z OBS VA CLD: SFC/FL230 N374500,E0150000 N370800,E0135700 N372300,E0133300 N374500,E0150000 FCST VA CLD +6H: SFC/FL000 FCST VA CLD +12H: SFC/FL000 FCST VA CLD +18H: SFC/FL000 RMK: SMALL PLUME CLEARLY IDENTIFIABLE FM SATELLITE DATA DRIFTING SOUTHWESTWARD MOST SIGNIFICANT ASH LOCATED IN THE VICTINY OF THE VOLCANO. NXT ADVISORY: NO LATER THAN 20260730/1807Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 17:59:00 +0000 2026/883-FUEGO-342090-20260730/1759Z VA ADVISORY DTG: 20260730/1759Z VAAC: WASHINGTON VOLCANO: FUEGO 342090 PSN: N142800 W0905200 AREA: GUATEMALA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/883 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: INTMT VA EMS. OBS VA DTG: 30/1740Z OBS VA CLD: SFC/FL150 N144000,W0910500 N142800,W0905200 N142800,W0905300 N143500,W0910800 N144000,W0910500 FCST VA CLD +6H: SFC/FL150 N143800,W0911000 N142800,W0905200 N142700,W0905300 N143200,W0911300 N143800,W0911000 FCST VA CLD +12H: SFC/FL150 N143700,W0911000 N142800,W0905200 N142700,W0905300 N143100,W0911300 N143700,W0911000 FCST VA CLD +18H: SFC/FL150 N143700,W0911100 N142800,W0905200 N142700,W0905200 N143000,W0911300 N143700,W0911100 RMK: VA NOT CLRLY OBSD BY WEBCAM OR STLT DUE TO BKN WX CLD CVR OBSCG SUMMIT. VA LAST OBS BY WEBCAM NEARLY 2 HRS AGO. VA CLDS PSBLY OBSD NW OF SUMMIT. VA CLRER NW OF SUMMIT 2 HRS AGO. NWP MDLS FCST WINDS TO MOV VA WNW THRU T+18. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20260731/0000Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 17:53:00 +0000 2026/124-SAKURAJIMA-[AIRA-CALDERA]-282080-20260730/1753Z VA ADVISORY DTG: 20260730/1753Z VAAC: TOKYO VOLCANO: SAKURAJIMA [AIRA CALDERA] 282080 PSN: N313600 E1303900 AREA: JAPAN SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/124 INFO SOURCE: JMA HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: ERUPTED AT 20260730/1731Z FL090 EXTD E OBS VA DTG: 30/1740Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: WE WILL ISSUE FURTHER ADVISORY IF VA IS DETECTED IN SATELLITE IMAGERY. NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 17:20:00 +0000 2026/856-IBU-268030-20260730/1720Z VA ADVISORY DTG: 20260730/1720Z VAAC: DARWIN VOLCANO: IBU 268030 PSN: N012900 E1273800 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/856 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL070 OBS AT 30/1630Z MOV N OBS VA DTG: 30/1700Z OBS VA CLD: SFC/FL070 N012800,E1274000 N012800,E1273600 N014800,E1273200 N014600,E1275100 MOV N 10KT FCST VA CLD +6H: SFC/FL070 N012800,E1274000 N012800,E1273600 N014800,E1273200 N014600,E1275100 FCST VA CLD +12H: SFC/FL070 N012700,E1274000 N012800,E1273600 N014800,E1273200 N014600,E1275100 FCST VA CLD +18H: SFC/FL070 N012800,E1273600 N014800,E1273200 N014600,E1275100 N012700,E1274000 RMK: VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/2320Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 17:00:00 +0000 2026/237-SHEVELUCH-300270-20260730/1700Z VA ADVISORY DTG: 20260730/1700Z VAAC: ANCHORAGE VOLCANO: SHEVELUCH 300270 PSN: N563900 E1612200 AREA: KAMCHATKA PENINSULA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/237 INFO SOURCE: HIMAWARI/GOES AVIATION COLOR CODE: - ERUPTION DETAILS: RESIDUAL VA CONTINUOUSLY OBSERVED IN SATELLITE OBS VA DTG: 30/1700Z OBS VA CLD: SFC/FL000 N534900,E1785900 N524100,E1783600 N531900,E1744600 N543100,E1754900 N534900,E1785900 FCST VA CLD +6H: SFC/FL000 N550200,E1790600 N514700,E1792600 N520700,E1761900 N545800,E1761400 N550200,E1790600 N550200,E1790600 FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: WESTERN PART OF VA PARTIALLY OBSCURED BY MET CLOUD...SC NXT ADVISORY: WILL BE ISSUED BY 20260730/2300Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 17:00:00 +0000 2026/237-SHEVELUCH-300270-20260730/1700Z VA ADVISORY DTG: 20260730/1700Z VAAC: ANCHORAGE VOLCANO: SHEVELUCH 300270 PSN: N563900 E1612200 AREA: KAMCHATKA PENINSULA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/237 INFO SOURCE: HIMAWARI/GOES AVIATION COLOR CODE: - ERUPTION DETAILS: RESIDUAL VA CONTINUOUSLY OBSERVED IN SATELLITE IMAGERY. OBS VA DTG: 30/1700Z OBS VA CLD: SFC/FL000 N534900,E1785900 N524100,E1783600 N531900,E1744600 N543100,E1754900 N534900,E1785900 FCST VA CLD +6H: SFC/FL000 N550200,E1790600 N514700,E1792600 N520700,E1761900 N545800,E1761400 N550200,E1790600 N550200,E1790600 FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: WESTERN PART OF VA PARTIALLY OBSCURED BY MET CLOUD...SC NXT ADVISORY: WILL BE ISSUED BY 20260730/2300Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 16:40:00 +0000 2026/564-DUKONO-268010-20260730/1640Z VA ADVISORY DTG: 20260730/1640Z VAAC: DARWIN VOLCANO: DUKONO 268010 PSN: N014200 E1275400 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/564 INFO SOURCE: HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL060 LAST 0BS AT 30/1020Z MOV NE OBS VA DTG: 30/1620Z OBS VA CLD: SFC/FL060 N013600,E1275400 N014000,E1274400 N030000,E1275500 N024700,E1284800 N020500,E1285800 MOV NE 10KT FCST VA CLD +6H: SFC/FL060 N013600,E1275400 N014000,E1274400 N025600,E1274800 N025100,E1283200 N021200,E1285700 FCST VA CLD +12H: SFC/FL060 N013600,E1275400 N014000,E1274400 N025600,E1274800 N025100,E1283200 N021200,E1285700 FCST VA CLD +18H: SFC/FL060 N013500,E1275400 N014000,E1274400 N025600,E1274800 N025100,E1283200 N021200,E1285700 RMK: VA CURRENTLY NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET CLOUD, HOWEVER ASH STILL STILL EXPECTED IN AREA. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/2240Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 16:26:00 +0000 2026/023-TELICA-344040-20260730/1626Z VA ADVISORY DTG: 20260730/1626Z VAAC: WASHINGTON VOLCANO: TELICA 344040 PSN: N123600 W0865000 AREA: NICARAGUA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/023 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: VA EM STARTED 1536Z. OBS VA DTG: 30/1600Z OBS VA CLD: SFC/FL080 N123700,W0865600 N123700,W0865000 N123600,W0864900 N123300,W0870600 N123700,W0870700 N123700,W0865600 MOV W 35KT FCST VA CLD +6H: SFC/FL080 N123700,W0865000 N123500,W0865000 N122600,W0871200 N123100,W0871400 N123700,W0865000 FCST VA CLD +12H: SFC/FL080 N123700,W0865000 N123600,W0865000 N122800,W0871300 N123400,W0871400 N123700,W0865000 FCST VA CLD +18H: SFC/FL080 N123700,W0865000 N123600,W0865000 N123000,W0871400 N123600,W0871400 N123700,W0865000 RMK: VA CLD OBSD BY STLT REACHING OVR 15 NMI W OF SUMMIT. WEBCAM FIRST SHOWED VA EM AT 1536Z. FL ESTD FM WEBCAM AND NWP MDLS. NWP MDLS FCST VA TO MOV W TO WSW THRU T+18HRS. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20260730/2230Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 16:20:00 +0000 2026/316-LEWOTOBI-264180-20260730/1620Z VA ADVISORY DTG: 20260730/1620Z VAAC: DARWIN VOLCANO: LEWOTOBI 264180 PSN: S083300 E1224600 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/316 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: ERUPTION LAST REP AT 30/1410Z OBS VA DTG: 30/1600Z OBS VA CLD: SFC/FL090 S083900,E1225200 S083900,E1223500 S081300,E1221600 S071500,E1222800 S072700,E1234300 MOV NE 10KT FCST VA CLD +6H: SFC/FL090 S084000,E1225100 S083900,E1223500 S081300,E1221600 S071500,E1222700 S072700,E1234200 FCST VA CLD +12H: SFC/FL090 S084000,E1225100 S084000,E1223500 S080000,E1220500 S071400,E1221400 S072500,E1233100 FCST VA CLD +18H: SFC/FL090 S084000,E1225100 S083900,E1223500 S080000,E1220500 S071400,E1221400 S072500,E1233100 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET CLOUD. GROUND REPORTS INDICATE INTERMITTENT VA ERUPTIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/2220Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 16:20:00 +0000 2026/28-ETNA-211060-20260730/1620Z VA ADVISORY DTG: 20260730/1620Z VAAC: TOULOUSE VOLCANO: ETNA 211060 PSN: N374400 E0145900 AREA: SICILY VOLCANIC PROVINCE SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/28 INFO SOURCE: VONA, SAT IMAGERY, WEBCAM AVIATION COLOR CODE: orange ERUPTION DETAILS: ERUPTION AT 20260730/0333Z ACTIVITY IS DECREASING OBS VA DTG: 30/1600Z OBS VA CLD: SFC/FL000 FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: WEAK ASH EMISSION STILL ONGOING FROM SUMMIT CRATERS. NO ASH CLOUD IS PRODUCED NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 15:53:00 +0000 2026/431-SANTA-MARIA-342030-20260730/1553Z VA ADVISORY DTG: 20260730/1553Z VAAC: WASHINGTON VOLCANO: SANTA MARIA 342030 PSN: N144500 W0913300 AREA: GUATEMALA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/431 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: OCNL VA EMS. OBS VA DTG: 30/1541Z OBS VA CLD: SFC/FL130 N145800,W0920800 N145500,W0915500 N144500,W0913400 N144400,W0913400 N144500,W0914500 N145000,W0920800 N145800,W0920800 MOV W 10KT FCST VA CLD +6H: SFC/FL130 N145800,W0920900 N144500,W0913400 N144400,W0913400 N144900,W0921100 N145800,W0920900 FCST VA CLD +12H: SFC/FL130 N145800,W0920900 N144500,W0913400 N144400,W0913400 N145000,W0921100 N145800,W0920900 FCST VA CLD +18H: SFC/FL130 N145800,W0921000 N144500,W0913400 N144400,W0913400 N145000,W0921100 N145800,W0921000 RMK: G19 STLT IMAGERY SHOWS MULT VA CLD EXTDG FM SUMMIT TO ABT 35 NMI WNW. WEBCAM SHOWS MAINLY LGT VA EMS FM FISSURE ON SW FLANK. FL ESTD FM OBSD VA CLD MOVMT AND NWP MDLS. NWP MDLS FCST LTLCG IN WINDS THRU T+18. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20260730/2200Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 15:06:00 +0000 2026/759-REVENTADOR-352010-20260730/1506Z VA ADVISORY DTG: 20260730/1506Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S000400 W0773900 AREA: ECUADOR SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/759 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. VOLCAT. AVIATION COLOR CODE: - ERUPTION DETAILS: CONT LGT VA EMS OBS OBS VA DTG: 30/1430Z OBS VA CLD: SFC/FL140 N000500,W0780000 S000400,W0774000 S000200,W0780200 N000500,W0780000 MOV W 25KT FCST VA CLD +6H: SFC/FL140 N000500,W0780100 S000400,W0773900 S000200,W0780200 N000500,W0780100 FCST VA CLD +12H: SFC/FL140 N000500,W0780100 S000400,W0773900 S000200,W0780300 N000500,W0780100 FCST VA CLD +18H: SFC/FL140 N000500,W0780000 S000400,W0773900 S000200,W0780200 N000500,W0780000 RMK: CONT LGT VA EMS MOV W TO WNW. VA NOT OBS IN STLT IMAGERY HWVR CONT ACT OBS IN WEBCAM. VA FCST TO MOV W TO WNW THRU T+18HRS BEFORE DISP. VO ACT LOW. ...FISHER NXT ADVISORY: WILL BE ISSUED BY 20260730/2100Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 13:30:00 +0000 2026/865-SEMERU-263300-20260730/1330Z VA ADVISORY DTG: 20260730/1330Z VAAC: DARWIN VOLCANO: SEMERU 263300 PSN: S080600 E1125500 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/865 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL150 REP AT 30/0315Z MOV NE OBS VA DTG: 30/1310Z OBS VA CLD: SFC/FL150 S080800,E1125300 S080400,E1125100 S075100,E1130900 S080900,E1131500 MOV E 10KT FCST VA CLD +6H: SFC/FL150 S080800,E1125300 S080500,E1125100 S074700,E1130600 S080500,E1131600 FCST VA CLD +12H: SFC/FL150 S080800,E1125200 S080400,E1125100 S074700,E1130600 S080500,E1131600 FCST VA CLD +18H: SFC/FL150 S080800,E1125300 S080400,E1125100 S074700,E1130600 S080500,E1131600 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET CLOUD. MULTIPLE GROUND REPORTS INDICATE INTERMITTENT VA ERUPTIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/1930Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 13:01:00 +0000 2026/27-ETNA-211060-20260730/1301Z VA ADVISORY DTG: 20260730/1301Z VAAC: TOULOUSE VOLCANO: ETNA 211060 PSN: N374400 E0145900 AREA: SICILY VOLCANIC PROVINCE SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/27 INFO SOURCE: VONA,SAT IMAGERY, WEBCAM AVIATION COLOR CODE: red ERUPTION DETAILS: ERUPTION AT 20260730/0333Z ERUPTION ONGOING, ASH OBS VA DTG: 30/1250Z OBS VA CLD: SFC/FL160 N375100,E0151200 N373600,E0145400 N362700,E0123300 N374200,E0120300 N375100,E0151200 MOV SW 15KT FCST VA CLD +6H: SFC/FL120 N375300,E0150000 N372300,E0145100 N370600,E0132700 N373600,E0130600 N375300,E0134800 N375300,E0150000 N365700,E0122100 N361500,E0124800 N351200,E0115400 N354800,E0113900 N365700,E0122100 FCST VA CLD +12H: SFC/FL120 N374500,E0132100 N370000,E0132100 N364200,E0115700 N371200,E0113600 N373000,E0113900 N374500,E0132100 FCST VA CLD +18H: SFC/FL100 N370800,E0125400 N364500,E0125700 N363000,E0115700 N365700,E0114200 N370800,E0125400 RMK: SO2 PLUME CLEARLY IDENTIFIABLE MOVE TOWARD W-SW IN FRONT OF THIN ASH CLOUD. MOST SIGNIFICANT ASH LOCATED IN THE VICTINY OF THE VOLCANO. DUE TO LOW INTENSITY OF THE EVENT, QVA DO NOT SHOW ANY SINIFICANT ASH CLOUD AND WILL NOT BE PROVIDED. NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 12:45:00 +0000 2026/471-SABANCAYA-354006-20260730/1245Z VA ADVISORY DTG: 20260730/1245Z VAAC: BUENOS AIRES VOLCANO: SABANCAYA 354006 PSN: S154700 W0715000 AREA: PERU SUMMIT ELEV: 5967 M (19576 FT) ADVISORY NR: 2026/471 INFO SOURCE: GOES-E. GFS. WEBCAM. AVIATION COLOR CODE: - ERUPTION DETAILS: NO VA EMISSIONS OBS VA DTG: 30/1200Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: NO VA SEEN IN SATELLITE DATA UNDER CLEAR SKIES. WEBCAM SHOWS STEAM EMISSION AT SUMMIT LEVEL. ...SMN NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 12:35:00 +0000 2026/333-PURACE-351060-20260730/1235Z VA ADVISORY DTG: 20260730/1235Z VAAC: WASHINGTON VOLCANO: PURACE 351060 PSN: N021900 W0762400 AREA: COLOMBIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/333 INFO SOURCE: GOES-19. NWP MODELS. VOLCAT. AVIATION COLOR CODE: - ERUPTION DETAILS: CONT VA EMS OBS VA DTG: 30/1200Z OBS VA CLD: SFC/FL180 N022900,W0764100 N021900,W0762400 N021900,W0764300 N022900,W0764100 MOV W 20KT FCST VA CLD +6H: SFC/FL180 N022900,W0764100 N021900,W0762300 N021900,W0764400 N022900,W0764100 FCST VA CLD +12H: SFC/FL180 N023000,W0764200 N021900,W0762300 N021900,W0764500 N023000,W0764200 FCST VA CLD +18H: SFC/FL180 N023100,W0764200 N021900,W0762300 N021900,W0764500 N023100,W0764200 RMK: CONT VA EMS OBS MOV W IN STLT IMAGERY. VA FCST TO CONT W MOV THRU T+18HRS BEFORE DISP. VO ACT MODERATE. ...FISHER NXT ADVISORY: WILL BE ISSUED BY 20260730/1830Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 12:04:00 +0000 2026/882-FUEGO-342090-20260730/1204Z VA ADVISORY DTG: 20260730/1204Z VAAC: WASHINGTON VOLCANO: FUEGO 342090 PSN: N142800 W0905200 AREA: GUATEMALA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/882 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. VOLCAT. AVIATION COLOR CODE: - ERUPTION DETAILS: CONT VA EMS OBS VA DTG: 30/1130Z OBS VA CLD: SFC/FL140 N145000,W0911900 N142800,W0905200 N144200,W0912600 N145000,W0911900 MOV W 15KT FCST VA CLD +6H: SFC/FL140 N145000,W0911900 N142800,W0905300 N144300,W0912500 N145000,W0911900 FCST VA CLD +12H: SFC/FL140 N145000,W0911900 N142800,W0905200 N144300,W0912600 N145000,W0911900 FCST VA CLD +18H: SFC/FL140 N145000,W0911900 N142800,W0905200 N144300,W0912600 N145000,W0911900 RMK: CONT VA EMS OBS MOV W TO WNW IN STLT IMAGERY. VA FCST TO CONT W TO WNW THRU T+18HRS BEFORE DISP. VO ACT MODERATE. ...FISHER NXT ADVISORY: WILL BE ISSUED BY 20260730/1800Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 11:20:00 +0000 2026/855-IBU-268030-20260730/1120Z VA ADVISORY DTG: 20260730/1120Z VAAC: DARWIN VOLCANO: IBU 268030 PSN: N012900 E1273800 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/855 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL070 MOV NE LAST REPORTED AT OBS VA DTG: 30/1100Z OBS VA CLD: SFC/FL070 N012800,E1273600 N014900,E1273300 N015000,E1274500 N013800,E1275400 N012700,E1274000 MOV N 10KT FCST VA CLD +6H: SFC/FL070 N012800,E1273600 N014900,E1273300 N015000,E1274600 N014000,E1275400 N012700,E1274000 FCST VA CLD +12H: SFC/FL070 N012800,E1273600 N014800,E1273100 N015000,E1274400 N014100,E1275300 N012700,E1274000 FCST VA CLD +18H: SFC/FL070 N012800,E1273600 N014900,E1273100 N015000,E1274400 N014100,E1275200 N012700,E1274000 RMK: INTERMITTENT VA ERUPTIONS ONGOING. HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/1720Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 11:01:00 +0000 2026/022-TELICA-344040-20260730/1101Z VA ADVISORY DTG: 20260730/1101Z VAAC: WASHINGTON VOLCANO: TELICA 344040 PSN: N123600 W0865000 AREA: NICARAGUA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/022 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. VOLCAT. AVIATION COLOR CODE: - ERUPTION DETAILS: VA EMS HAS DISP OBS VA DTG: 30/1030Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA EMS HAS DISP IN STLT IMAGERY. NO NEW EMS OBS. NO NEW RPRTS OF VA EMS. ...FISHER NXT ADVISORY: NO FURTHER ADVISORIES ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 11:00:00 +0000 2026/236-SHEVELUCH-300270-20260730/1100Z VA ADVISORY DTG: 20260730/1100Z VAAC: ANCHORAGE VOLCANO: SHEVELUCH 300270 PSN: N563900 E1612200 AREA: KAMCHATKA PENINSULA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/236 INFO SOURCE: HIMAWARI AVIATION COLOR CODE: - ERUPTION DETAILS: VA CONTINUOUSLY OBS IN SATELLITE IMAGERY. OBS VA DTG: 30/1100Z OBS VA CLD: SFC/FL000 N515400,E1761300 N511600,E1762100 N500100,E1743500 N502000,E1742800 N512300,E1751200 N514700,E1745700 N515400,E1761300 FCST VA CLD +6H: SFC/FL000 N536000,E1752600 N530600,E1782700 N523400,E1773100 N532900,E1750300 N536000,E1752600 N536000,E1752600 FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: SOME PART OF VA OBSCURED BY MET CLOUD...TS NXT ADVISORY: WILL BE ISSUED BY 20260730/1700Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 11:00:00 +0000 2026/236-SHEVELUCH-300270-20260730/1100Z VA ADVISORY DTG: 20260730/1100Z VAAC: ANCHORAGE VOLCANO: SHEVELUCH 300270 PSN: N563900 E1612200 AREA: KAMCHATKA PENINSULA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/236 INFO SOURCE: HIMAWARI AVIATION COLOR CODE: - ERUPTION DETAILS: VA CONTINUOUSLY OBS IN SATELLITE IMAGERY. OBS VA DTG: 30/1100Z OBS VA CLD: SFC/FL000 N515400,E1761300 N511600,E1762100 N500100,E1743500 N502000,E1742800 N512300,E1751200 N514700,E1745700 N515400,E1761300 FCST VA CLD +6H: SFC/FL000 N536000,E1752600 N530600,E1782700 N523400,E1773100 N532900,E1750300 N536000,E1752600 N536000,E1752600 FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: SOME PART OF VA OBSCURED BY MET CLOUD...TS NXT ADVISORY: WILL BE ISSUED BY 20260730/1700Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 10:40:00 +0000 2026/563-DUKONO-268010-20260730/1040Z VA ADVISORY DTG: 20260730/1040Z VAAC: DARWIN VOLCANO: DUKONO 268010 PSN: N014200 E1275400 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/563 INFO SOURCE: HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: CONTINUOUS VA TO FL060 0BS AT 30/1020Z MOV OBS VA DTG: 30/1020Z OBS VA CLD: SFC/FL060 N013600,E1275400 N014000,E1274400 N030000,E1275500 N024800,E1284800 N020500,E1285800 MOV NE 10KT FCST VA CLD +6H: SFC/FL060 N013600,E1275400 N014000,E1274400 N030000,E1275500 N024700,E1284800 N020500,E1285800 FCST VA CLD +12H: SFC/FL060 N013600,E1275400 N014000,E1274400 N025600,E1274800 N025100,E1283200 N021200,E1285700 FCST VA CLD +18H: SFC/FL060 N013600,E1275400 N014000,E1274400 N025600,E1274800 N025100,E1283200 N021200,E1285700 RMK: VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/1640Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 10:20:00 +0000 2026/315-LEWOTOBI-264180-20260730/1020Z VA ADVISORY DTG: 20260730/1020Z VAAC: DARWIN VOLCANO: LEWOTOBI 264180 PSN: S083300 E1224600 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/315 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: ERUPTION LAST REP AT 30/0950Z OBS VA DTG: 30/1000Z OBS VA CLD: SFC/FL090 S084000,E1225000 S083800,E1223400 S072300,E1222300 S072000,E1232500 S075400,E1234700 MOV N 10KT FCST VA CLD +6H: SFC/FL090 S083900,E1225200 S083900,E1223500 S080000,E1220500 S071600,E1221000 S072300,E1232900 FCST VA CLD +12H: SFC/FL090 S084000,E1225100 S083900,E1223500 S080000,E1220500 S071600,E1221000 S072400,E1233000 FCST VA CLD +18H: SFC/FL090 S084000,E1225100 S083900,E1223400 S080000,E1220500 S071600,E1221100 S072400,E1233000 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET CLOUD. GROUND REPORTS INDICATE INTERMITTENT VA ERUPTIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/1620Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 09:54:00 +0000 2026/26-ETNA-211060-20260730/0954Z VA ADVISORY DTG: 20260730/0954Z VAAC: TOULOUSE VOLCANO: ETNA 211060 PSN: N374400 E0145900 AREA: SICILY VOLCANIC PROVINCE SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/26 INFO SOURCE: VONA,SAT IMAGERY, WEBCAM AVIATION COLOR CODE: red ERUPTION DETAILS: ERUPTION AT 20260730/0333Z ERUPTION ONGOING, ASH OBS VA DTG: 30/0945Z OBS VA CLD: SFC/FL190 N373800,E0140300 N375100,E0150000 N373800,E0150300 N372300,E0140900 N373800,E0140300 MOV W 20KT FCST VA CLD +6H: SFC/FL140 N371200,E0113000 N375700,E0123900 N374800,E0141800 N374200,E0145100 N364500,E0121500 N371200,E0113000 FCST VA CLD +12H: SFC/FL140 N363600,E0104800 N375300,E0120300 N374500,E0140900 N373300,E0143300 N363600,E0113900 N363600,E0104800 FCST VA CLD +18H: SFC/FL120 N372700,E0105700 N375700,E0120900 N372100,E0132700 N370600,E0132400 N361800,E0103300 N372700,E0105700 RMK: SO2 PLUME CLEARLY IDENTIFIABLE MOVE TOWARD NW IN FRONT OF THIN ASH CLOUD. MOST SIGNIFICANT ASH LOCATED IN THE VICTINY OF THE VOLCANO. DUE TO LOW INTENSITY OF THE EVENT, QVA DO NOT SHOW ANY SINIFICANT ASH CLOUD AND WILL NOT BE PROVIDED. NXT ADVISORY: NO LATER THAN 20260730/1545Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 09:09:00 +0000 2026/758-REVENTADOR-352010-20260730/0909Z VA ADVISORY DTG: 20260730/0909Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S000500 W0773900 AREA: ECUADOR SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/758 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: ONGOING VA EMS OBS VA DTG: 30/0850Z OBS VA CLD: SFC/FL140 N000200,W0775800 S000400,W0774000 S000500,W0773900 S000400,W0775800 N000200,W0775800 FCST VA CLD +6H: SFC/FL140 N000200,W0775800 S000400,W0774000 S000500,W0773900 S000300,W0775800 N000200,W0775800 FCST VA CLD +12H: SFC/FL140 N000200,W0775800 S000400,W0774000 S000400,W0774000 S000400,W0775800 N000200,W0775800 FCST VA CLD +18H: SFC/FL140 N000200,W0775700 S000400,W0774000 S000500,W0774000 S000400,W0775800 N000200,W0775700 RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN SUMMIT AREA. WEBCAM SHOWS SUMMIT ACTV. NO CHG FCST TO MDL WINDS AT FL NXT 18 HR. ...KONON NXT ADVISORY: WILL BE ISSUED BY 20260730/1515Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 07:30:00 +0000 2026/864-SEMERU-263300-20260730/0730Z VA ADVISORY DTG: 20260730/0730Z VAAC: DARWIN VOLCANO: SEMERU 263300 PSN: S080600 E1125500 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/864 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL150 REP AT 29/2331Z MOV NE OBS VA DTG: 30/0710Z OBS VA CLD: SFC/FL150 S080800,E1125200 S080300,E1125200 S075400,E1131400 S081400,E1131400 MOV E 10KT FCST VA CLD +6H: SFC/FL150 S080800,E1125300 S080400,E1125100 S075100,E1130900 S080900,E1131500 FCST VA CLD +12H: SFC/FL150 S080800,E1125300 S080500,E1125100 S074700,E1130600 S080500,E1131600 FCST VA CLD +18H: SFC/FL150 S080800,E1125100 S080300,E1125100 S075000,E1130100 S080200,E1131400 S081600,E1130600 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET CLOUD. MULTIPLE GROUND REPORTS INDICATE INTERMITTENT VA ERUPTIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/1330Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 06:45:00 +0000 2026/470-SABANCAYA-354006-20260730/0645Z VA ADVISORY DTG: 20260730/0645Z VAAC: BUENOS AIRES VOLCANO: SABANCAYA 354006 PSN: S154700 W0715000 AREA: PERU SUMMIT ELEV: 5967 M (19576 FT) ADVISORY NR: 2026/470 INFO SOURCE: GOES-E. GFS. WEBCAM. VOLCAT. AVIATION COLOR CODE: - ERUPTION DETAILS: SPORADICS EMISSIONS OBS VA DTG: 30/0620Z OBS VA CLD: SFC/FL250 S154600,W0714900 S160400,W0714400 S160200,W0715600 S154700,W0715200 S154600,W0714900 FCST VA CLD +6H: SFC/FL250 S154600,W0715200 S154600,W0714800 S155800,W0714600 S161700,W0714700 S161800,W0715600 S161600,W0720300 S154600,W0715200 FCST VA CLD +12H: SFC/FL250 S154500,W0714900 S161100,W0714300 S161300,W0714600 S161300,W0715300 S160000,W0715400 S154600,W0715200 S154500,W0714900 FCST VA CLD +18H: SFC/FL250 S154400,W0714900 S160100,W0713800 S161100,W0713900 S161200,W0714500 S160000,W0715200 S154600,W0715300 S154400,W0714900 RMK: SPORADICS AND STRONG EMISSIONS ARE SEEN IN WEBCAM AND SATELLITE IMAGERY DURING LAST HOUR TL FL250 MOV S 10KT. ...SMN NXT ADVISORY: WILL BE ISSUED BY 20260730/1245Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 06:44:00 +0000 2026/332-PURACE-351060-20260730/0644Z VA ADVISORY DTG: 20260730/0644Z VAAC: WASHINGTON VOLCANO: PURACE 351060 PSN: N021900 W0762400 AREA: COLOMBIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/332 INFO SOURCE: GOES-19. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: ONGOING VA EMS OBS VA DTG: 30/0620Z OBS VA CLD: SFC/FL180 N022300,W0763600 N021900,W0762300 N021900,W0762300 N021700,W0763600 N022300,W0763600 FCST VA CLD +6H: SFC/FL180 N022400,W0763600 N021900,W0762300 N021900,W0762300 N021700,W0763600 N022400,W0763600 FCST VA CLD +12H: SFC/FL180 N022300,W0763500 N021900,W0762300 N021900,W0762300 N021700,W0763500 N022300,W0763500 FCST VA CLD +18H: - RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN SUMMIT AREA. VA EMS LIKELY CONTINUE GIVEN RECENT ACTVTY. NO CHG FCST TO MDL WINDS AT FL NXT 12 HR. ...KONON NXT ADVISORY: WILL BE ISSUED BY 20260730/1245Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 06:08:00 +0000 2026/881-FUEGO-342090-20260730/0608Z VA ADVISORY DTG: 20260730/0608Z VAAC: WASHINGTON VOLCANO: FUEGO 342090 PSN: N142800 W0905200 AREA: GUATEMALA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/881 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: ONGOING VA EMS OBS VA DTG: 30/0540Z OBS VA CLD: SFC/FL140 N144000,W0911400 N142800,W0905200 N142800,W0905300 N143300,W0911400 N144000,W0911400 FCST VA CLD +6H: SFC/FL140 N144000,W0911400 N142800,W0905200 N142800,W0905300 N143300,W0911400 N144000,W0911400 FCST VA CLD +12H: SFC/FL140 N143900,W0911300 N142800,W0905200 N142800,W0905300 N143300,W0911400 N143900,W0911300 FCST VA CLD +18H: SFC/FL140 N144000,W0911400 N142800,W0905200 N142800,W0905300 N143300,W0911400 N144000,W0911400 RMK: VA DETECTED ON STLT MOVG WNW OF SUMMIT. WEBCAM SHOWS VA EMS. NO CHG FCST TO MDL WINDS AT FL NXT 18 HR. ...KONON NXT ADVISORY: WILL BE ISSUED BY 20260730/1215Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 05:20:00 +0000 2026/854-IBU-268030-20260730/0520Z VA ADVISORY DTG: 20260730/0520Z VAAC: DARWIN VOLCANO: IBU 268030 PSN: N012900 E1273800 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/854 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL070 MOV NE LAST REPORTED AT OBS VA DTG: 30/0500Z OBS VA CLD: SFC/FL070 N012800,E1274000 N012800,E1273600 N014400,E1272700 N015000,E1274100 N014200,E1275400 MOV N 5KT FCST VA CLD +6H: SFC/FL070 N012800,E1273600 N014600,E1273300 N015000,E1274800 N013900,E1275700 N012700,E1274000 FCST VA CLD +12H: SFC/FL070 N012700,E1273900 N012900,E1273500 N014700,E1273400 N014800,E1274900 N013500,E1275700 FCST VA CLD +18H: SFC/FL070 N012800,E1273900 N012900,E1273500 N014500,E1273200 N015000,E1274400 N014000,E1275400 RMK: INTERMITTENT VA ERUPTIONS ONGOING. HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/1120Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 05:11:00 +0000 2026/021-TELICA-344040-20260730/0511Z VA ADVISORY DTG: 20260730/0511Z VAAC: WASHINGTON VOLCANO: TELICA 344040 PSN: N123600 W0865000 AREA: NICARAGUA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/021 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: ONGOING VA EMS OBS VA DTG: 30/0450Z OBS VA CLD: SFC/FL060 N124000,W0870100 N123700,W0865000 N123600,W0865000 N123500,W0870100 N124000,W0870100 FCST VA CLD +6H: SFC/FL060 N124000,W0870100 N123700,W0865000 N123600,W0865000 N123500,W0870100 N124000,W0870100 FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA NOT DETECTED ON STLT. EARLIER WEBCAM SHOWS LGT VA EMS. NO CHG FCST TO MDL WINDS AT FL NXT 6 HR. ...KONON NXT ADVISORY: WILL BE ISSUED BY 20260730/1115Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 05:00:00 +0000 2026/235-SHEVELUCH-300270-20260730/0500Z VA ADVISORY DTG: 20260730/0500Z VAAC: ANCHORAGE VOLCANO: SHEVELUCH 300270 PSN: N563900 E1612200 AREA: KAMCHATKA PENINSULA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/235 INFO SOURCE: HIMAWARI AVIATION COLOR CODE: - ERUPTION DETAILS: VA OBS IN SATELLITE IMAGERY. OBS VA DTG: 30/0500Z OBS VA CLD: SFC/FL300 N492700,E1701300 N490800,E1701800 N490400,E1664800 N493200,E1661300 N492700,E1701300 FCST VA CLD +6H: SFC/FL300 N522900,E1760000 N513800,E1766000 N483700,E1720300 N490400,E1703800 N522900,E1760000 N522900,E1760000 FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: NIL...BS NXT ADVISORY: WILL BE ISSUED BY 20260730/1100Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 05:00:00 +0000 2026/235-SHEVELUCH-300270-20260730/0500Z VA ADVISORY DTG: 20260730/0500Z VAAC: ANCHORAGE VOLCANO: SHEVELUCH 300270 PSN: N563900 E1612200 AREA: KAMCHATKA PENINSULA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/235 INFO SOURCE: HIMAWARI AVIATION COLOR CODE: - ERUPTION DETAILS: VA OBS IN SATELLITE IMAGERY. OBS VA DTG: 30/0500Z OBS VA CLD: SFC/FL300 N492700,E1701300 N490800,E1701800 N490400,E1664800 N493200,E1661300 N492700,E1701300 FCST VA CLD +6H: SFC/FL300 N522900,E1760000 N513800,E1766000 N483700,E1720300 N490400,E1703800 N522900,E1760000 N522900,E1760000 FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: NIL...BS NXT ADVISORY: WILL BE ISSUED BY 20260730/1100Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 04:52:00 +0000 2026/78-MARAPI-261140-20260730/0452Z VA ADVISORY DTG: 20260730/0452Z VAAC: DARWIN VOLCANO: MARAPI 261140 PSN: S002300 E1002800 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/78 INFO SOURCE: CVGHM, HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: ERUPTION REPORTED AT 29/2239Z OBS VA DTG: 30/0430Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA NOT IDENTIFIABLE ON LATEST SATELLITE IMAGERY DUE TO MET CLOUD. VA IS EXPECTED TO HAVE DISSIPATED. NO FURTHER REPORTS OF NEW OR ONGOING ERUPTION. ADVISORY TERMINATED. NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 04:45:00 +0000 2026/562-DUKONO-268010-20260730/0445Z VA ADVISORY DTG: 20260730/0445Z VAAC: DARWIN VOLCANO: DUKONO 268010 PSN: N014200 E1275400 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/562 INFO SOURCE: HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: CONTINUOUS VA TO FL060 EXT N OBS AT OBS VA DTG: 30/0430Z OBS VA CLD: SFC/FL060 N013800,E1275800 N014000,E1274600 N023900,E1273000 N025600,E1281900 N021900,E1285800 MOV N 10KT FCST VA CLD +6H: SFC/FL060 N013500,E1275400 N014100,E1274300 N024500,E1273400 N024600,E1283900 N015800,E1285900 FCST VA CLD +12H: SFC/FL060 N013600,E1275400 N014300,E1274500 N023800,E1275600 N023000,E1284900 N014600,E1285200 FCST VA CLD +18H: SFC/FL060 N013600,E1275600 N014000,E1274400 N024600,E1274400 N024800,E1284000 N015800,E1290200 RMK: CONTINUOUS VA EMISSION IDENTIFIABLE ON SATELLITE IMAGERY MOV N. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/1045Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 04:20:00 +0000 2026/314-LEWOTOBI-264180-20260730/0420Z VA ADVISORY DTG: 20260730/0420Z VAAC: DARWIN VOLCANO: LEWOTOBI 264180 PSN: S083300 E1224600 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/314 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: ERUPTION LAST REP AT 30/0352Z OBS VA DTG: 30/0400Z OBS VA CLD: SFC/FL090 S084000,E1224700 S083200,E1223400 S071600,E1224300 S071600,E1234500 S081100,E1240000 MOV NE 10KT FCST VA CLD +6H: SFC/FL090 S084000,E1225000 S083800,E1223400 S072300,E1222300 S072000,E1232500 S075400,E1234700 FCST VA CLD +12H: SFC/FL090 S083900,E1225200 S083900,E1223500 S080000,E1220500 S071600,E1221000 S072300,E1232900 FCST VA CLD +18H: SFC/FL090 S083800,E1225700 S084000,E1220800 S075000,E1215400 S071100,E1222200 S071800,E1233400 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET CLOUD. GROUND REPORTS INDICATE INTERMITTENT VA ERUPTIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/1020Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 03:47:00 +0000 2026/430-SANTA-MARIA-342030-20260730/0347Z VA ADVISORY DTG: 20260730/0347Z VAAC: WASHINGTON VOLCANO: SANTA MARIA 342030 PSN: N144500 W0913300 AREA: GUATEMALA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/430 INFO SOURCE: GOES-19. AVIATION COLOR CODE: - ERUPTION DETAILS: VA EMS ENDED OBS VA DTG: 30/0330Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA NOT DETECTED ON VARIOUS STLT PRODUCTS. WX CLDS CVR PART OF SUMMIT AREA CURRENTLY. NEW VA EMS LIKELY AT ANY TIME. ...KONON NXT ADVISORY: NO FURTHER ADVISORIES ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 03:21:00 +0000 2026/757-REVENTADOR-352010-20260730/0321Z VA ADVISORY DTG: 20260730/0321Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S000400 W0773900 AREA: ECUADOR SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/757 INFO SOURCE: GOES-19. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: ONGOING VA EMS OBS VA DTG: 30/0300Z OBS VA CLD: SFC/FL150 N000100,W0775700 S000400,W0773900 S000500,W0773900 S000500,W0775700 N000100,W0775700 FCST VA CLD +6H: SFC/FL150 N000100,W0775700 S000400,W0773900 S000500,W0773900 S000500,W0775700 N000100,W0775700 FCST VA CLD +12H: SFC/FL150 N000100,W0775700 S000400,W0773900 S000500,W0774000 S000500,W0775700 N000100,W0775700 FCST VA CLD +18H: SFC/FL150 N000100,W0775700 S000400,W0774000 S000500,W0774000 S000500,W0775700 N000100,W0775700 RMK: COR FOR FL AT 12 HR. VA NOT DETECTED ON STLT DUE TO WX CLDS IN SUMMIT AREA. VA EMS LIKELY CONTINUE GIVEN RECENT ACTVTY. NO CHG FCST TO MDL WINDS AT FL NXT 18 HR. ...KONON NXT ADVISORY: WILL BE ISSUED BY 20260730/0915Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 02:57:00 +0000 2026/288-AMBAE-257030-20260730/0257Z VA ADVISORY DTG: 20260730/0257Z VAAC: WELLINGTON VOLCANO: AMBAE 257030 PSN: S152300 E1675000 AREA: VANUATU SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/288 INFO SOURCE: H9 SAT IMAGERY / WEBCAM AVIATION COLOR CODE: - ERUPTION DETAILS: ERUPTION AT 20260729/0400Z NO OBSERVED OBS VA DTG: 30/0257Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: ASH IS NO LONGER OBSERVABLE ON SATELLITE IMAGERY. NO FURTHER EVIDENCE OF CONTINUING ASH EMISSIONS. NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 01:41:00 +0000 2026/331-PURACE-351060-20260730/0141Z VA ADVISORY DTG: 20260730/0141Z VAAC: WASHINGTON VOLCANO: PURACE 351060 PSN: N021900 W0762400 AREA: COLOMBIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/331 INFO SOURCE: GOES-19. VONA. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: ONGOING VA EMS OBS VA DTG: 30/0050Z OBS VA CLD: SFC/FL190 N022200,W0763300 N021900,W0762400 N021800,W0762400 N021800,W0763400 N022200,W0763300 FCST VA CLD +6H: SFC/FL190 N022200,W0763300 N021900,W0762400 N021900,W0762400 N021800,W0763300 N022200,W0763300 FCST VA CLD +12H: SFC/FL190 N022200,W0763300 N021900,W0762300 N021900,W0762400 N021800,W0763300 N022200,W0763300 FCST VA CLD +18H: SFC/FL190 N022200,W0763200 N021900,W0762400 N021800,W0762400 N021800,W0763300 N022200,W0763200 RMK: COR FOR DTG. VA NOT DETECTED ON STLT DUE TO WX CLDS IN SUMMIT AREA. VONA INDICATES VA EMS. NO CHG FCST TO MDL WINDS AT FL NXT 18 HR. ...KONON NXT ADVISORY: - ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 01:30:00 +0000 2026/863-SEMERU-263300-20260730/0130Z VA ADVISORY DTG: 20260730/0130Z VAAC: DARWIN VOLCANO: SEMERU 263300 PSN: S080600 E1125500 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/863 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL150 REP AT 29/2331Z MOV NE OBS VA DTG: 30/0110Z OBS VA CLD: SFC/FL150 S080700,E1125300 S080300,E1125300 S075600,E1131500 S081500,E1131400 MOV E 10KT FCST VA CLD +6H: SFC/FL150 S080800,E1125300 S080300,E1125300 S075300,E1131300 S081200,E1131500 FCST VA CLD +12H: SFC/FL150 S080800,E1125300 S080400,E1125200 S074700,E1130800 S080600,E1131500 FCST VA CLD +18H: SFC/FL150 S080800,E1125300 S080500,E1125100 S074700,E1130600 S080500,E1131600 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET CLOUD. MULTIPLE GROUND REPORTS INDICATE INTERMITTENT VA ERUPTIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/0730Z= ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 01:14:00 +0000 2026/331-PURACE-351060-20260730/0114Z VA ADVISORY DTG: 20260730/0114Z VAAC: WASHINGTON VOLCANO: PURACE 351060 PSN: N021900 W0762400 AREA: COLOMBIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/331 INFO SOURCE: GOES-19. VONA. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: ONGOING VA EMS OBS VA DTG: 29/0050Z OBS VA CLD: SFC/FL190 N022200,W0763300 N021900,W0762400 N021800,W0762400 N021800,W0763400 N022200,W0763300 FCST VA CLD +6H: SFC/FL190 N022200,W0763300 N021900,W0762400 N021900,W0762400 N021800,W0763300 N022200,W0763300 FCST VA CLD +12H: SFC/FL190 N022200,W0763300 N021900,W0762300 N021900,W0762400 N021800,W0763300 N022200,W0763300 FCST VA CLD +18H: SFC/FL190 N022200,W0763200 N021900,W0762400 N021800,W0762400 N021800,W0763300 N022200,W0763200 RMK: VA NOT DETECTED ON STLT DUE TO WX CLDS IN SUMMIT AREA. VONA INDICATES VA EMS. NO CHG FCST TO MDL WINDS AT FL NXT 18 HR. ...KONON NXT ADVISORY: WILL BE ISSUED BY 20260730/0715Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 00:24:00 +0000 2026/880-FUEGO-342090-20260730/0024Z VA ADVISORY DTG: 20260730/0024Z VAAC: WASHINGTON VOLCANO: FUEGO 342090 PSN: N142800 W0905200 AREA: GUATEMALA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/880 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: VA EMS ONGOING OBS VA DTG: 30/0000Z OBS VA CLD: SFC/FL150 N143200,W0910300 N142900,W0905200 N142700,W0905200 N142800,W0910400 N143200,W0910300 FCST VA CLD +6H: SFC/FL150 N143500,W0910500 N142900,W0905200 N142600,W0905300 N143100,W0910700 N143500,W0910500 FCST VA CLD +12H: SFC/FL150 N143800,W0910000 N142900,W0905200 N142700,W0905200 N143500,W0910400 N143800,W0910000 FCST VA CLD +18H: SFC/FL150 N143500,W0910400 N142900,W0905200 N142600,W0905200 N143200,W0910700 N143500,W0910400 RMK: VA EMS NOT OBS IN STLT IMG DUE TO HVY MET CLD CVR. ONGOING INTMT VA EMS SEEN IN WEBCAM THRU MET CLDS. NWP MDL GUIDANCE FCSTS GEN WNW TO NW MOVMT THRU T+18. HGT BASED ON WEBCAM. ...MONAGHAN NXT ADVISORY: WILL BE ISSUED BY 20260730/0630Z ]]> https://sierra.dev.watchers.news Thu, 30 Jul 2026 00:01:00 +0000 2026/054-SHEVELUCH-300270-20260730/0001Z VA ADVISORY DTG: 20260730/0001Z VAAC: WASHINGTON VOLCANO: SHEVELUCH 300270 PSN: N563800 E1612200 AREA: KAMCHATKA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/054 INFO SOURCE: TOKYO VAAC. AVIATION COLOR CODE: - ERUPTION DETAILS: NOT PROVIDED OBS VA DTG: - OBS VA CLD: SFC/FL000 FCST VA CLD +6H: SFC/FL000 FCST VA CLD +12H: SFC/FL000 FCST VA CLD +18H: SFC/FL000 RMK: PLEASE SEE FVFE01 RJTD 292350 THAT DESCRIBES CONDITIONS NEAR THE WASHINGTON VAAC AREA OF RESPONSIBILITY. ...MONAGHAN NXT ADVISORY: NO FURTHER ADVISORIES ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 23:50:00 +0000 2026/318-SHEVELUCH-300270-20260729/2350Z VA ADVISORY DTG: 20260729/2350Z VAAC: TOKYO VOLCANO: SHEVELUCH 300270 PSN: N563900 E1612200 AREA: RUSSIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/318 INFO SOURCE: HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: VA IS NOT IDENTIFIABLE IN SATELLITE IMAGERY. OBS VA DTG: 29/2320Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA IS NOT IDENTIFIABLE DUE TO MET CLOUD OR HAS DISSIPATED. WE WILL ISSUE FURTHER ADVISORY IF VA DETECTED IN SATELLITE IMAGERY. NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 23:27:00 +0000 2026/77-MARAPI-261140-20260729/2327Z VA ADVISORY DTG: 20260729/2327Z VAAC: DARWIN VOLCANO: MARAPI 261140 PSN: S002300 E1002800 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/77 INFO SOURCE: CVGHM, HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: ERUPTION REPORTED AT 29/2239Z OBS VA DTG: 29/2310Z OBS VA CLD: SFC/FL120 S002200,E1002400 S001800,E1002800 S002100,E1003800 S002900,E1003000 MOV SE 5KT FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: CVGHM REPORTED ERUPTION AT 29/2239Z. VA NOT IDENTIFIABLE ON SAT IMAGERY DUE TO MET CLOUD. VA IS EXPECTED TO DISSIPATE WITHIN 3HRS. HEIGHT AND MOV BASED ON MODELS. NXT ADVISORY: NO LATER THAN 20260730/0527Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 23:22:00 +0000 2026/020-TELICA-344040-20260729/2322Z VA ADVISORY DTG: 20260729/2322Z VAAC: WASHINGTON VOLCANO: TELICA 344040 PSN: N123600 W0865000 AREA: NICARAGUA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/020 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: VA EMS OBS OBS VA DTG: 29/2300Z OBS VA CLD: SFC/FL060 N124600,W0874700 N123800,W0865100 N123500,W0864900 N121600,W0873800 N122800,W0875500 N124600,W0874700 MOV W 30KT FCST VA CLD +6H: SFC/FL060 N123800,W0865100 N123400,W0864900 N115000,W0882600 N122900,W0883700 N123800,W0865100 FCST VA CLD +12H: SFC/FL060 N123800,W0865200 N123400,W0864900 N115000,W0882600 N121400,W0883200 N123800,W0865200 FCST VA CLD +18H: SFC/FL060 N123800,W0865000 N123400,W0864900 N120200,W0882900 N122300,W0883500 N123800,W0865000 RMK: VA EMS OBS IN STLT IMG FANNING OUT TO THE W UP TO APPRX 60NM FM SUMMIT. VA EMS SEEN IN WEBCAM. NWP MDL GUIDANCE FCSTS GEN WSW MOVMT THRU T+18. HGT BASED ON WEBCAM, MOVMT, AND NWP MDLS. ...MONAGHAN NXT ADVISORY: WILL BE ISSUED BY 20260730/0515Z ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 23:20:00 +0000 2026/853-IBU-268030-20260729/2320Z VA ADVISORY DTG: 20260729/2320Z VAAC: DARWIN VOLCANO: IBU 268030 PSN: N012900 E1273800 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/853 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL070 MOV NE LAST REPORTED AT OBS VA DTG: 29/2300Z OBS VA CLD: SFC/FL070 N012900,E1273300 N014700,E1273400 N014700,E1274900 N013300,E1275800 N012400,E1274400 MOV NE 5KT FCST VA CLD +6H: SFC/FL070 N012700,E1274000 N012800,E1273500 N014500,E1272700 N015100,E1274300 N013900,E1275800 FCST VA CLD +12H: SFC/FL070 N012800,E1273600 N014600,E1273300 N015000,E1274800 N013900,E1275700 N012700,E1274000 FCST VA CLD +18H: SFC/FL070 N012600,E1274100 N012800,E1273300 N014800,E1273400 N014900,E1275000 N013500,E1275700 RMK: INTERMITTENT VA ERUPTIONS ONGOING. HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/0520Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 22:45:00 +0000 2026/561-DUKONO-268010-20260729/2245Z VA ADVISORY DTG: 20260729/2245Z VAAC: DARWIN VOLCANO: DUKONO 268010 PSN: N014200 E1275400 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/561 INFO SOURCE: HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: CONTINUOUS VA TO FL060 EXT N OBS AT OBS VA DTG: 29/2230Z OBS VA CLD: SFC/FL060 N013700,E1275600 N014200,E1274500 N023800,E1273700 N024500,E1282600 N020600,E1285100 MOV N 5KT FCST VA CLD +6H: SFC/FL060 N013700,E1275900 N013900,E1274600 N024300,E1273100 N025900,E1282000 N021200,E1285400 FCST VA CLD +12H: SFC/FL060 N013800,E1275600 N014200,E1274500 N023400,E1274800 N024000,E1283400 N015900,E1285300 FCST VA CLD +18H: SFC/FL060 N013600,E1275400 N014300,E1274500 N023800,E1275600 N023000,E1284900 N014600,E1285200 RMK: CONTINUOUS VA EMISSION IDENTIFIABLE ON SATELLITE IMAGERY MOV N. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/0445Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 22:20:00 +0000 2026/313-LEWOTOBI-264180-20260729/2220Z VA ADVISORY DTG: 20260729/2220Z VAAC: DARWIN VOLCANO: LEWOTOBI 264180 PSN: S083300 E1224600 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/313 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL090 MOV NE LAST OBS 29/0910Z OBS VA DTG: 29/2200Z OBS VA CLD: SFC/FL090 S083900,E1224500 S083000,E1223800 S072200,E1230500 S073800,E1235600 S081400,E1240000 MOV NE 10KT FCST VA CLD +6H: SFC/FL090 S083800,E1224500 S083000,E1223700 S071900,E1230200 S074000,E1235900 S081400,E1240300 FCST VA CLD +12H: SFC/FL090 S083900,E1224800 S083600,E1223700 S072000,E1223800 S072000,E1232500 S075400,E1234700 FCST VA CLD +18H: SFC/FL090 S083700,E1225000 S083400,E1223800 S071900,E1223400 S073000,E1233200 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY. GROUND REPORTS INDICATE INTERMITTENT VA ERUPTIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/0420Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 21:54:00 +0000 2026/429-SANTA-MARIA-342030-20260729/2154Z VA ADVISORY DTG: 20260729/2154Z VAAC: WASHINGTON VOLCANO: SANTA MARIA 342030 PSN: N144500 W0913300 AREA: GUATEMALA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/429 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: VA EMS PSBL OBS VA DTG: 29/2130Z OBS VA CLD: SFC/FL140 N144600,W0913300 N144400,W0913200 N144300,W0913800 N144500,W0913900 N144600,W0913300 FCST VA CLD +6H: SFC/FL140 N144800,W0914400 N144600,W0913300 N144400,W0913200 N144400,W0914500 N144800,W0914400 FCST VA CLD +12H: SFC/FL140 N145000,W0914100 N144600,W0913200 N144400,W0913300 N144700,W0914200 N145000,W0914100 FCST VA CLD +18H: - RMK: VA EMS NOT OBS IN STLT IMG OR WEBCAM DUE TO HVY MET CLD CVR. VA EMS PSBLY CONTNG BASED ON PREV ACTIVITY. NWP MDL GUIDANCE FCSTS VEERING MOVMT TO THE NW BY T+12. ...MONAGHAN NXT ADVISORY: WILL BE ISSUED BY 20260730/0400Z ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 21:31:00 +0000 2026/287-AMBAE-257030-20260729/2131Z VA ADVISORY DTG: 20260729/2131Z VAAC: WELLINGTON VOLCANO: AMBAE 257030 PSN: S152300 E1675000 AREA: VANUATU SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/287 INFO SOURCE: H9/GOES-W SAT IMAGERY AVIATION COLOR CODE: - ERUPTION DETAILS: ERUPTION AT 20260729/0400Z INTERMITTENT VA OBS VA DTG: 29/2131Z OBS VA CLD: SFC/FL100 S152000,E1674400 S151700,E1675500 S155100,E1680800 S155100,E1674900 S160600,E1690800 S161800,E1700500 S165700,E1695500 S164800,E1690100 MOV SE 15KT FCST VA CLD +6H: SFC/FL100 S152000,E1674400 S151700,E1675500 S155300,E1681300 S155500,E1674500 S163300,E1694300 S164200,E1703400 S172200,E1701400 S170200,E1691800 FCST VA CLD +12H: SFC/FL100 S152000,E1674400 S151700,E1675500 S155400,E1681400 S155500,E1674200 FCST VA CLD +18H: SFC/FL100 S151400,E1675800 S155200,E1681200 S155500,E1674200 S151500,E1674000 RMK: ASH VISIBLE IN SATELLITE IMAGERY IN TWO LOCATIONS. LOW LEVEL INTERMITTENT ERUPTION NEAR SUMMIT. ASH CLOUD FROM PRIOR ERUPTION MOVING SE AND DISSIPATING. NXT ADVISORY: NO LATER THAN 20260730/0331Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 21:24:00 +0000 2026/756-REVENTADOR-352010-20260729/2124Z VA ADVISORY DTG: 20260729/2124Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S000400 W0773900 AREA: ECUADOR SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/756 INFO SOURCE: GOES-19. NWP MODELS. SERVICIO AVIATION COLOR CODE: - ERUPTION DETAILS: CONS VA EMS OBS OBS VA DTG: 29/2050Z OBS VA CLD: SFC/FL170 N000100,W0783500 S000400,W0774000 S000700,W0773900 S001100,W0783500 N000100,W0783500 FCST VA CLD +6H: SFC/FL170 N000200,W0785700 S000300,W0773800 S000700,W0773900 S001200,W0785700 N000200,W0785700 FCST VA CLD +12H: SFC/FL170 N000000,W0783500 S000300,W0773900 S000700,W0773900 S001100,W0783500 N000000,W0783500 FCST VA CLD +18H: SFC/FL170 N000300,W0783700 S000300,W0773900 S000800,W0773900 S000700,W0783800 N000300,W0783700 RMK: FQNT VA EMS OBS IN STLT IMG UP TO APPRX 55NM FM SUMMIT. QUITO AIRPORT REPORTS VA CLDS UP TO FL170. NWP MDL GUIDANCE FCSTS GEN W MOVMT THRU T+18. HGT BASED ON RPRTS, MOVMT, AND NWP MDLS. ...MONAGHAN NXT ADVISORY: WILL BE ISSUED BY 20260730/0330Z ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 20:57:00 +0000 2026/053-SHEVELUCH-300270-20260729/2057Z VA ADVISORY DTG: 20260729/2057Z VAAC: WASHINGTON VOLCANO: SHEVELUCH 300270 PSN: N563800 E1612200 AREA: KAMCHATKA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/053 INFO SOURCE: TOKYO VAAC. AVIATION COLOR CODE: - ERUPTION DETAILS: NOT PROVIDED OBS VA DTG: - OBS VA CLD: SFC/FL000 FCST VA CLD +6H: SFC/FL000 FCST VA CLD +12H: SFC/FL000 FCST VA CLD +18H: SFC/FL000 RMK: PLEASE SEE FVFE01 RJTD 291800 ISSUED BY THE TOKYO VAAC THAT DESCRIBES CONDITIONS NEAR THE WASHINGTON VAAC AREA OF RESPONSIBILITY. ...MONAGHAN NXT ADVISORY: WILL BE ISSUED BY 20260730/0300Z ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 20:09:00 +0000 2026/019-TELICA-344040-20260729/2009Z VA ADVISORY DTG: 20260729/2009Z VAAC: WASHINGTON VOLCANO: TELICA 344040 PSN: N123600 W0865000 AREA: NICARAGUA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/019 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: VA EMS OBS OBS VA DTG: 29/1940Z OBS VA CLD: SFC/FL050 N122600,W0885300 N121600,W0883700 N121400,W0882800 N121000,W0883700 N122300,W0885800 N122600,W0885300 N123700,W0865100 N123500,W0864900 N122300,W0865700 N122700,W0870200 N123700,W0865100 MOV SW 20KT FCST VA CLD +6H: SFC/FL050 N123700,W0865000 N123500,W0864800 N121600,W0870600 N122200,W0871300 N123700,W0865000 FCST VA CLD +12H: SFC/FL050 N123800,W0865000 N123500,W0864900 N122000,W0871100 N122600,W0871400 N123800,W0865000 FCST VA CLD +18H: SFC/FL050 N123800,W0865000 N123500,W0864800 N122000,W0871700 N122800,W0872100 N123800,W0865000 RMK: DIFFUSE REMNANT VA CLD OBS IN STLT IMG AT APPRX 115NM FM SUMMIT. NEW VA EMS OBS IN STLT IMG AND WEBCAM UP TO APPRX 15NM FM SUMMIT. NWP MDL GUIDANCE FCSTS GEN SSW TO WSW MOVMT THRU T+18. HGT BASED ON WEBCAM, MOVMT, AND NWP MDLS. ...MONAGHAN NXT ADVISORY: WILL BE ISSUED BY 20260730/0215Z ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 19:30:00 +0000 2026/862-SEMERU-263300-20260729/1930Z VA ADVISORY DTG: 20260729/1930Z VAAC: DARWIN VOLCANO: SEMERU 263300 PSN: S080600 E1125500 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/862 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: ERUPTION LAST REP AT 29/0610Z OBS VA DTG: 29/1900Z OBS VA CLD: SFC/FL150 S080800,E1125400 S080400,E1125400 S080100,E1131600 S081800,E1131500 MOV E 10KT FCST VA CLD +6H: SFC/FL150 S080800,E1125400 S080400,E1125300 S075500,E1131400 S081200,E1131500 FCST VA CLD +12H: SFC/FL150 S080800,E1125300 S080300,E1125300 S075500,E1131400 S081200,E1131500 FCST VA CLD +18H: SFC/FL150 S080800,E1125300 S080300,E1125400 S075500,E1131400 S081200,E1131500 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET CLOUD. MULTIPLE GROUND REPORTS INDICATE INTERMITTENT VA ERUPTIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260730/0130Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 18:41:00 +0000 2026/879-FUEGO-342090-20260729/1841Z VA ADVISORY DTG: 20260729/1841Z VAAC: WASHINGTON VOLCANO: FUEGO 342090 PSN: N142800 W0905200 AREA: GUATEMALA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/879 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: VA EMS PSBL OBS VA DTG: 29/1810Z OBS VA CLD: SFC/FL140 N143200,W0910300 N142900,W0905200 N142600,W0905200 N142800,W0910500 N143200,W0910300 FCST VA CLD +6H: SFC/FL140 N143400,W0911400 N142900,W0905300 N142600,W0905300 N142900,W0911400 N143400,W0911400 FCST VA CLD +12H: SFC/FL140 N143900,W0911200 N142900,W0905200 N142600,W0905300 N143500,W0911300 N143900,W0911200 FCST VA CLD +18H: - RMK: VA EMS NOT OBS IN STLT IMG OR WEBCAM DUE TO HVY MET CLD CVR. VA EMS PSBLY CONTNG BASED ON PREV ACTIVITY. NWP MDL GUIDANCE FCSTS GEN WNW TO NW MOVMT THRU T+12. ...MONAGHAN NXT ADVISORY: WILL BE ISSUED BY 20260730/0045Z ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 18:09:00 +0000 2026/234-SHEVELUCH-300270-20260729/1809Z VA ADVISORY DTG: 20260729/1809Z VAAC: ANCHORAGE VOLCANO: SHEVELUCH 300270 PSN: N563900 E1612200 AREA: KAMCHATKA PENINSULA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/234 INFO SOURCE: - AVIATION COLOR CODE: - ERUPTION DETAILS: - OBS VA DTG: - OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: - NXT ADVISORY: - ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 17:40:00 +0000 2026/131-LEWOTOLOK-264230-20260729/1740Z VA ADVISORY DTG: 20260729/1740Z VAAC: DARWIN VOLCANO: LEWOTOLOK 264230 PSN: S081600 E1233000 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/131 INFO SOURCE: CVGHM, HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL070 LAST OBS 29/0900Z OBS VA DTG: 29/1710Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA FROM VOLCANO LEWOTOLO HAS NOW DISSIPATED. NO SIGNS OF NEW OR ONGOING ERUPTION. HOTSPOT EVIDENT AT THE SUMMIT. ADVISORY TERMINATED. NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 17:20:00 +0000 2026/852-IBU-268030-20260729/1720Z VA ADVISORY DTG: 20260729/1720Z VAAC: DARWIN VOLCANO: IBU 268030 PSN: N012900 E1273800 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/852 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL070 MOV NE OBS VA DTG: 29/1650Z OBS VA CLD: SFC/FL070 N012800,E1273600 N014900,E1274100 N014600,E1275400 N013800,E1275800 N012700,E1274000 MOV NE 5KT FCST VA CLD +6H: SFC/FL070 N012800,E1273600 N014700,E1273300 N015000,E1274500 N013800,E1275800 N012700,E1274000 FCST VA CLD +12H: SFC/FL070 N012800,E1273600 N014700,E1273400 N015000,E1274500 N013900,E1275800 N012700,E1274000 FCST VA CLD +18H: SFC/FL070 N012800,E1273600 N014600,E1273300 N015000,E1274500 N013900,E1275700 N012700,E1274000 RMK: INTERMITTENT VA ERUPTIONS ONGOING. HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260729/2320Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 16:45:00 +0000 2026/560-DUKONO-268010-20260729/1645Z VA ADVISORY DTG: 20260729/1645Z VAAC: DARWIN VOLCANO: DUKONO 268010 PSN: N014200 E1275400 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/560 INFO SOURCE: HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: CONTINUOUS VA TO FL060 EXT NE LAST OBS OBS VA DTG: 29/1620Z OBS VA CLD: SFC/FL060 N013900,E1275700 N014000,E1274900 N022900,E1274400 N024000,E1282900 N020600,E1284700 MOV NE 5KT FCST VA CLD +6H: SFC/FL060 N013900,E1275600 N014200,E1274900 N022900,E1274300 N024000,E1282800 N020700,E1285600 FCST VA CLD +12H: SFC/FL060 N013900,E1275600 N014000,E1274900 N022900,E1274400 N024000,E1282800 N020700,E1285500 FCST VA CLD +18H: SFC/FL060 N013900,E1275700 N014100,E1274900 N022900,E1274400 N023900,E1282900 N020900,E1285300 RMK: VA ERUPTION NOT IDENTIFIABLE ON SATELLITE IMAGERY. HOWEVER, VA ERUPTION EXPECTED TO BE ONGOING. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260729/2245Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 16:20:00 +0000 2026/312-LEWOTOBI-264180-20260729/1620Z VA ADVISORY DTG: 20260729/1620Z VAAC: DARWIN VOLCANO: LEWOTOBI 264180 PSN: S083300 E1224600 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/312 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL090 MOV NE LAST OBS 29/0910Z OBS VA DTG: 29/1550Z OBS VA CLD: SFC/FL090 S083600,E1224500 S083100,E1224100 S073200,E1232300 S074100,E1235600 S081100,E1240000 MOV NE 10KT FCST VA CLD +6H: SFC/FL090 S083800,E1224400 S083100,E1224000 S073300,E1232200 S074400,E1235900 S081700,E1240200 FCST VA CLD +12H: SFC/FL090 S083800,E1224500 S083000,E1224000 S073400,E1232300 S074400,E1235900 S081700,E1240200 FCST VA CLD +18H: SFC/FL090 S083800,E1224400 S083100,E1224100 S073500,E1232100 S074400,E1235800 S081700,E1240200 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY. GROUND REPORTS INDICATE INTERMITTENT VA ERUPTIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON SATELLITE IMAGERY, GROUND REPORTS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260729/2220Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 15:53:00 +0000 2026/428-SANTA-MARIA-342030-20260729/1553Z VA ADVISORY DTG: 20260729/1553Z VAAC: WASHINGTON VOLCANO: SANTA MARIA 342030 PSN: N144500 W0913300 AREA: GUATEMALA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/428 INFO SOURCE: GOES-19. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: VA EMS OBS OBS VA DTG: 29/1520Z OBS VA CLD: SFC/FL140 N145500,W0915800 N145500,W0915500 N144900,W0915300 N144600,W0913200 N144400,W0913300 N144600,W0915800 N145500,W0915800 MOV W 10KT FCST VA CLD +6H: SFC/FL140 N145000,W0921300 N144600,W0913200 N144400,W0913200 N144200,W0921300 N145000,W0921300 FCST VA CLD +12H: SFC/FL140 N145300,W0920700 N144600,W0913200 N144400,W0913200 N144700,W0920800 N145300,W0920700 FCST VA CLD +18H: SFC/FL140 N145700,W0915800 N144600,W0913200 N144400,W0913300 N145200,W0920000 N145700,W0915800 RMK: VA EMS OBS IN STLT IMG UP TO APPRX 25NM FM SUMMIT. NWP MDL GUIDANCE FCSTS GEN WSW TO WNW MOVMT THRU T+18 ...MONAGHAN NXT ADVISORY: WILL BE ISSUED BY 20260729/2200Z ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 15:47:00 +0000 2026/286-AMBAE-257030-20260729/1547Z VA ADVISORY DTG: 20260729/1547Z VAAC: WELLINGTON VOLCANO: AMBAE 257030 PSN: S152300 E1675000 AREA: VANUATU SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/286 INFO SOURCE: H9/GOES-W SAT IMAGERY AVIATION COLOR CODE: - ERUPTION DETAILS: ERUPTION AT 20260729/0400Z INTERMITTENT VA OBS VA DTG: 29/1547Z OBS VA CLD: SFC/FL150 S151300,E1674300 S151800,E1685200 S155700,E1695500 S164500,E1690700 S154000,E1673800 MOV SE 15KT FCST VA CLD +6H: SFC/FL150 S151000,E1672900 S151800,E1685100 S161000,E1701600 S170600,E1692800 S154700,E1672300 FCST VA CLD +12H: SFC/FL150 S151400,E1680000 S162100,E1700500 S171000,E1692300 S161000,E1672600 S151200,E1673500 FCST VA CLD +18H: SFC/FL150 S151500,E1680100 S162100,E1700400 S171000,E1692300 S161000,E1672600 S151200,E1673600 RMK: ASH CLEARLY VISIBLE IN SAT IMAGERY. HEIGHT BASED ON NOUMEA SOUNDING AND ECMWF MODEL. MOVEMENT BASED ON ECMWF AND GFS MODEL. NXT ADVISORY: NO LATER THAN 20260729/2147Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 15:29:00 +0000 2026/040-KILAUEA-332010-20260729/1529Z VA ADVISORY DTG: 20260729/1529Z VAAC: WASHINGTON VOLCANO: KILAUEA 332010 PSN: N192500 W1551700 AREA: HAWAIIAN.IS SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/040 INFO SOURCE: GOES-18. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: VA ERUPTION ENDED OBS VA DTG: 29/1501Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: COR FOR SAT INFO SOURCE. ERUPTION ENDED. REMNANT VA DISSIPATED. NO VA OBS IN STLT IMG OR WEBCAM. ...MONAGHAN NXT ADVISORY: NO FURTHER ADVISORIES ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 15:10:00 +0000 2026/040-KILAUEA-332010-20260729/1510Z VA ADVISORY DTG: 20260729/1510Z VAAC: WASHINGTON VOLCANO: KILAUEA 332010 PSN: N192500 W1551700 AREA: HAWAIIAN.IS SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/040 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: VA ERUPTION ENDED OBS VA DTG: 29/1501Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: ERUPTION ENDED. REMNANT VA DISSIPATED. NO VA OBS IN STLT IMG OR WEBCAM. ...MONAGHAN NXT ADVISORY: NO FURTHER ADVISORIES ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 12:22:00 +0000 2026/233-SHEVELUCH-300270-20260729/1222Z VA ADVISORY DTG: 20260729/1222Z VAAC: ANCHORAGE VOLCANO: SHEVELUCH 300270 PSN: N563900 E1612200 AREA: KAMCHATKA PENINSULA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/233 INFO SOURCE: - AVIATION COLOR CODE: - ERUPTION DETAILS: - OBS VA DTG: - OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: - NXT ADVISORY: - ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 11:40:00 +0000 2026/130-LEWOTOLOK-264230-20260729/1140Z VA ADVISORY DTG: 20260729/1140Z VAAC: DARWIN VOLCANO: LEWOTOLOK 264230 PSN: S081600 E1233000 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/130 INFO SOURCE: CVGHM, HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL070 LAST OBS 29/0900Z OBS VA DTG: 29/1110Z OBS VA CLD: SFC/FL070 S081800,E1232900 S080600,E1232300 S080300,E1233900 S081200,E1234200 S081800,E1233100 MOV NE 10KT FCST VA CLD +6H: SFC/FL070 S081800,E1232900 S080500,E1232300 S080300,E1233900 S081200,E1234100 S081800,E1233200 FCST VA CLD +12H: SFC/FL070 S081700,E1232900 S080600,E1232400 S080300,E1233900 S081200,E1234200 S081700,E1233200 FCST VA CLD +18H: SFC/FL070 S081800,E1233100 S081800,E1232900 S080600,E1232500 S080300,E1233900 S081200,E1234200 RMK: VA NOT IDENTIFIABLE ON LATEST SAT IMAGERY. HEIGHT AND MOV BASED ON GROUND REPORT AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260729/1740Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 10:23:00 +0000 2026/285-AMBAE-257030-20260729/1023Z VA ADVISORY DTG: 20260729/1023Z VAAC: WELLINGTON VOLCANO: AMBAE 257030 PSN: S152300 E1675000 AREA: VANUATU SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/285 INFO SOURCE: H9/GOES-W SAT IMAGERY AVIATION COLOR CODE: - ERUPTION DETAILS: ERUPTION AT 20260729/0400Z CONTINUOUS LOW OBS VA DTG: 29/1023Z OBS VA CLD: SFC/FL150 S151700,E1674200 S151800,E1685200 S162300,E1684100 S154000,E1673800 MOV SE 15KT FCST VA CLD +6H: SFC/FL150 S151400,E1674300 S151800,E1700700 S164400,E1694100 S154700,E1673900 FCST VA CLD +12H: SFC/FL150 S151400,E1674300 S152600,E1705700 S170800,E1704300 S155400,E1673700 FCST VA CLD +18H: SFC/FL150 S151400,E1674300 S152500,E1705700 S170700,E1704300 S155400,E1673700 RMK: ASH CLEARLY VISIBLE IN SAT IMAGERY. HEIGHT BASED ON NOUMEA SOUNDING AND ECMWF MODEL. MOVEMENT BASED ON GFS MODEL. NXT ADVISORY: NO LATER THAN 20260729/1623Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 09:30:00 +0000 2026/039-KILAUEA-332010-20260729/0930Z VA ADVISORY DTG: 20260729/0930Z VAAC: WASHINGTON VOLCANO: KILAUEA 332010 PSN: N192500 W1551700 AREA: HAWAIIAN.IS SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/039 INFO SOURCE: GOES-18. VONA. WEBCAM. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: ONGOING LGT VA EM OBS VA DTG: 29/0906Z OBS VA CLD: SFC/FL160 N192500,W1551900 N192500,W1551600 N185400,W1553500 N185600,W1554100 N192500,W1551900 FCST VA CLD +6H: SFC/FL160 N192600,W1551900 N192400,W1551600 N183600,W1554300 N184100,W1555300 N192600,W1551900 FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: UPDATED DUE TO GREATER PLUME DIST. VA EM WITH GAS/WTR VPR OBS IN WEBCAM AND IN STLT IMG MOVING SSW AT APX 35 NMI FM SUMMIT REACHING COASTLINE. EXP CONT SSW MOVEMENT THRU T+6 HRS. FL BSD ON VONA. FCST BSD ON NWP MDLS. ...LINER NXT ADVISORY: WILL BE ISSUED BY 20260729/1530Z ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 07:51:00 +0000 2026/038-KILAUEA-332010-20260729/0751Z VA ADVISORY DTG: 20260729/0751Z VAAC: WASHINGTON VOLCANO: KILAUEA 332010 PSN: N192500 W1551700 AREA: HAWAIIAN.IS SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/038 INFO SOURCE: GOES-18. HVO. VONA. WEBCAM. NWP AVIATION COLOR CODE: - ERUPTION DETAILS: ONGOING LGT VA EMISSIONS OBS VA DTG: 29/0716Z OBS VA CLD: SFC/FL160 N192500,W1551700 N192400,W1551600 N191100,W1552300 N191300,W1552900 N192500,W1551700 FCST VA CLD +6H: SFC/FL160 N192500,W1551800 N192400,W1551600 N190200,W1552300 N190700,W1553200 N192500,W1551800 FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA WITH GAS/WTR VPR OBS EMITTING FM SUMMIT. EMISSIONS OBS IN STLT MOVING SSW AT APX 15 NMI FM SUMMIT. LGT WINDS EXP WITH MOVEMENT TO SSW THRU T+6 HRS. FL BSD ON VONA. FCST BSD ON NWP MDLS. ...LINER NXT ADVISORY: WILL BE ISSUED BY 20260729/1345Z ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 05:40:00 +0000 2026/129-LEWOTOLOK-264230-20260729/0540Z VA ADVISORY DTG: 20260729/0540Z VAAC: DARWIN VOLCANO: LEWOTOLOK 264230 PSN: S081600 E1233000 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/129 INFO SOURCE: CVGHM, HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: VA REPORTED TO FL070 MOV NE AT 29/0507Z OBS VA DTG: 29/0520Z OBS VA CLD: SFC/FL070 S081900,E1233200 S081700,E1232500 S074800,E1232600 S075800,E1235400 MOV NE 5KT FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: CVGHM REPORTED VA TO 600M ABV THE SUMMIT AT 29/0507Z. VA NOT IDENTIFIABLE ON LATEST SAT IMAGERY. VA IS EXPECTED TO DISSIPATE WITHIN 3-6HRS. HEIGHT AND MOV BASED ON GROUND REPORT AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260729/1140Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 05:21:00 +0000 2026/284-AMBAE-257030-20260729/0521Z VA ADVISORY DTG: 20260729/0521Z VAAC: WELLINGTON VOLCANO: AMBAE 257030 PSN: S152300 E1675000 AREA: VANUATU SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/284 INFO SOURCE: H9/GOES-W SAT IMAGERY AVIATION COLOR CODE: - ERUPTION DETAILS: ERUPTION AT 20260729/0400Z LOW LEVEL VA OBS VA DTG: 29/0521Z OBS VA CLD: SFC/FL150 S151600,E1675200 S153600,E1681200 S154900,E1675300 S152300,E1674200 MOV SE 15KT FCST VA CLD +6H: SFC/FL150 S151100,E1675200 S161900,E1695600 S165000,E1684700 S160400,E1673900 S151200,E1671700 FCST VA CLD +12H: SFC/FL150 S150900,E1675400 S161700,E1700200 S170000,E1694800 S161500,E1671400 S150900,E1665400 FCST VA CLD +18H: SFC/FL150 S150900,E1675600 S162100,E1700300 S170000,E1694800 S161400,E1671400 S150900,E1665500 RMK: HEIGHT BASED ON NOUMEA SOUNDING AND ECMWF MODEL. MOVEMENT BASED ON ECMWF MODEL. NXT ADVISORY: NO LATER THAN 20260729/1121Z= ]]> https://sierra.dev.watchers.news Wed, 29 Jul 2026 04:10:00 +0000 2026/469-SABANCAYA-354006-20260729/0410Z VA ADVISORY DTG: 20260729/0410Z VAAC: BUENOS AIRES VOLCANO: SABANCAYA 354006 PSN: S154700 W0715000 AREA: PERU SUMMIT ELEV: 5967 M (19576 FT) ADVISORY NR: 2026/469 INFO SOURCE: GOES-E. GFS. WEBCAM. AVIATION COLOR CODE: - ERUPTION DETAILS: NO VA EMISSION OBS VA DTG: 29/0340Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA NOT IDENTIFIABLE FROM SATELLITE DATA NOR WEBCAM UNDER CLEAR SKY. ...SMN NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Tue, 28 Jul 2026 22:10:00 +0000 2026/468-SABANCAYA-354006-20260728/2210Z VA ADVISORY DTG: 20260728/2210Z VAAC: BUENOS AIRES VOLCANO: SABANCAYA 354006 PSN: S154700 W0715000 AREA: PERU SUMMIT ELEV: 5967 M (19576 FT) ADVISORY NR: 2026/468 INFO SOURCE: GOES-E. GFS. WEBCAM. AVIATION COLOR CODE: - ERUPTION DETAILS: ISOLATED VA EMISSION OBS VA DTG: 28/2150Z OBS VA CLD: SFC/FL220 S154400,W0713300 S154800,W0713500 S154700,W0715000 S154400,W0713300 MOV E 10KT FCST VA CLD +6H: SFC/FL220 S154400,W0711800 S154800,W0705000 S160500,W0710400 S155300,W0712300 S154400,W0711800 FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA CLD MOV E CAN BE SEEN IN SATELLITE IMAGERY UNDER CLEAR SKIES. WEBCAM SHOWED A PUFF EMISSION OF STEAM AND LGT ASH TO FL220. ...SMN NXT ADVISORY: WILL BE ISSUED BY 20260729/0410Z= ]]> https://sierra.dev.watchers.news Tue, 28 Jul 2026 05:46:00 +0000 2026/010-MASAYA-344100-20260728/0546Z VA ADVISORY DTG: 20260728/0546Z VAAC: WASHINGTON VOLCANO: MASAYA 344100 PSN: N115900 W0861000 AREA: NICARAGUA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/010 INFO SOURCE: GOES-19. NWP MODELS. AVIATION COLOR CODE: - ERUPTION DETAILS: NO FURTHER VA EMISSIONS OBS VA DTG: 28/0510Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA EMISSIONS NOT OBSERVED IN SATELLITE IMAGERY AND NO NEW REPORTS OF VA RECEIVED. ...LINER NXT ADVISORY: NO FURTHER ADVISORIES ]]> https://sierra.dev.watchers.news Tue, 28 Jul 2026 04:30:00 +0000 2026/467-SABANCAYA-354006-20260728/0430Z VA ADVISORY DTG: 20260728/0430Z VAAC: BUENOS AIRES VOLCANO: SABANCAYA 354006 PSN: S154700 W0715000 AREA: PERU SUMMIT ELEV: 5967 M (19576 FT) ADVISORY NR: 2026/467 INFO SOURCE: GOES-E. GFS. WEBCAM. VOLCAT. AVIATION COLOR CODE: - ERUPTION DETAILS: NO VA EMISSION OBS VA DTG: 28/0340Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA IS NO LONGER IDENTIFIABLE IN SATELLITE NOR WEBCAM DATA. NO EMISSION REGISTRATED IN THE LAST OURS UNDER CLEAR SKIES ...SMN NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Sat, 25 Jul 2026 16:43:00 +0000 2026/72-KRAKATAU-262000-20260725/1643Z VA ADVISORY DTG: 20260725/1643Z VAAC: DARWIN VOLCANO: KRAKATAU 262000 PSN: S060600 E1052500 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/72 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL040 LAST OBS AT 25/1430Z MOV WSW OBS VA DTG: 25/1620Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA NOT IDENTIFIABLE ON CURRENT SATELLITE IMAGE. NO REPORTS OF NEW OR ONGOING ERUPTION. ADVISORY TERMINATED. NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Sat, 25 Jul 2026 14:53:00 +0000 2026/023-KATMAI-312170-20260725/1453Z VA ADVISORY DTG: 20260725/1453Z VAAC: ANCHORAGE VOLCANO: KATMAI 312170 PSN: N581700 W1545800 AREA: ALASKA PENINSULA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/023 INFO SOURCE: HIMAWARI/WEBCAMS AVIATION COLOR CODE: - ERUPTION DETAILS: NA OBS VA DTG: 25/1453Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: NIL...BH NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Sat, 25 Jul 2026 11:50:00 +0000 2026/022-KATMAI-312170-20260725/1150Z VA ADVISORY DTG: 20260725/1150Z VAAC: ANCHORAGE VOLCANO: KATMAI 312170 PSN: N581700 W1545800 AREA: ALASKA PENINSULA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/022 INFO SOURCE: HIMAWARI AVIATION COLOR CODE: - ERUPTION DETAILS: NO ERUTION. RESUSPENDED VA. OBS VA DTG: 25/1150Z OBS VA CLD: SFC/FL060 N581600,W1543700 N572300,W1532800 N565900,W1545300 N580700,W1551100 N581500,W1543400 N572100,W1532700 N565800,W1545200 N580700,W1551100 N581600,W1543700 N581600,W1543700 FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: RESUSPENDED VA CONTINUOUSLY OBSERVED IN GOES SATELLITE IMAGERY. WNDS ARE FORECAST TO WKN...BH NXT ADVISORY: IF NECESSARY WILL BE ISSUED BY 20260725/1750Z ]]> https://sierra.dev.watchers.news Sat, 25 Jul 2026 10:43:00 +0000 2026/71-KRAKATAU-262000-20260725/1043Z VA ADVISORY DTG: 20260725/1043Z VAAC: DARWIN VOLCANO: KRAKATAU 262000 PSN: S060600 E1052500 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/71 INFO SOURCE: HIMAWARI-9, CVGHM AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL040 OBS AT 25/1020Z MOV WSW OBS VA DTG: 25/1020Z OBS VA CLD: SFC/FL040 S060200,E1052600 S060900,E1053100 S061700,E1052400 S061300,E1051300 S060200,E1051600 MOV SW 5KT FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: CVGHM REPORT VA TO 300M ABV SUMMIT. VA OBS ON SATELLITE MOV WSW. EXPECTED TO DISSIPATE IN 6 HRS. HEIGHT AND MOV BASED ON SATELLITE IMAGE AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260725/1643Z= ]]> https://sierra.dev.watchers.news Sat, 25 Jul 2026 05:57:00 +0000 2026/021-KATMAI-312170-20260725/0557Z VA ADVISORY DTG: 20260725/0557Z VAAC: ANCHORAGE VOLCANO: KATMAI 312170 PSN: N581700 W1545800 AREA: ALASKA PENINSULA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/021 INFO SOURCE: GOES AVIATION COLOR CODE: - ERUPTION DETAILS: NO ERUPTION. RESUSPENDED VA. OBS VA DTG: 25/0557Z OBS VA CLD: SFC/FL060 N581500,W1543700 N573300,W1533000 N572000,W1542400 N580800,W1550900 N581500,W1543700 N581500,W1543700 FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: RESUSPENDED VA CONTINUOUSLY OBSERVED IN GOES SATELLITE IMAGERY...NS NXT ADVISORY: WILL BE ISSUED BY 20260725/1157Z= ]]> https://sierra.dev.watchers.news Sat, 25 Jul 2026 03:45:00 +0000 2026/70-KRAKATAU-262000-20260725/0345Z VA ADVISORY DTG: 20260725/0345Z VAAC: DARWIN VOLCANO: KRAKATAU 262000 PSN: S060600 E1052500 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/70 INFO SOURCE: HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL050 LAST OBS AT 24/1030Z EXTD NNW OBS VA DTG: 25/0330Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY. NO REPORTS OF NEW OR ONGOING ERUPTION. ADVISORY TERMINATED. NXT ADVISORY: NO FURTHER ADVISORIES= ]]> https://sierra.dev.watchers.news Sat, 25 Jul 2026 00:00:00 +0000 2026/020-KATMAI-312170-20260725/0000Z VA ADVISORY DTG: 20260725/0000Z VAAC: ANCHORAGE VOLCANO: KATMAI 312170 PSN: N581700 W1545800 AREA: ALASKA PENINSULA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/020 INFO SOURCE: GOES AVIATION COLOR CODE: - ERUPTION DETAILS: NO ERUPTION. RE-SUSPENDED VA. OBS VA DTG: 25/0000Z OBS VA CLD: SFC/FL060 N581400,W1543800 N574800,W1541600 N574100,W1544800 N580900,W1550900 N581400,W1543800 FCST VA CLD +6H: SFC/FL060 N581400,W1543800 N573300,W1540100 N572500,W1544200 N580900,W1550800 N581400,W1543800 N581400,W1543800 FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: NO ERUPTION. RE-SUSPENDED VA DUE TO STRONG NW WINDS...SC NXT ADVISORY: WILL BE ISSUED BY 20260725/0600Z= ]]> https://sierra.dev.watchers.news Fri, 24 Jul 2026 22:10:00 +0000 2026/69-KRAKATAU-262000-20260724/2210Z VA ADVISORY DTG: 20260724/2210Z VAAC: DARWIN VOLCANO: KRAKATAU 262000 PSN: S060600 E1052500 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/69 INFO SOURCE: HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL050 LAST OBS AT 24/1030Z EXTD NNW OBS VA DTG: 24/2150Z OBS VA CLD: SFC/FL050 S060700,E1052900 S063000,E1051300 S061100,E1045500 S055700,E1050900 S060200,E1052600 MOV W 5KT FCST VA CLD +6H: SFC/FL050 S060800,E1053900 S062300,E1052400 S061400,E1050500 S055200,E1051000 S055100,E1052900 FCST VA CLD +12H: SFC/FL050 S060800,E1053900 S062300,E1052400 S061400,E1050500 S055200,E1051000 S055100,E1052900 FCST VA CLD +18H: SFC/FL050 S060800,E1053900 S062300,E1052400 S061400,E1050500 S055200,E1051000 S055100,E1052900 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET CLOUD. VA HEIGHT AND MOVEMENT BASED ON LAST SATELLITE OBS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260725/0410Z= ]]> https://sierra.dev.watchers.news Fri, 24 Jul 2026 16:10:00 +0000 2026/68-KRAKATAU-262000-20260724/1610Z VA ADVISORY DTG: 20260724/1610Z VAAC: DARWIN VOLCANO: KRAKATAU 262000 PSN: S060600 E1052500 AREA: INDONESIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/68 INFO SOURCE: HIMAWARI-9 AVIATION COLOR CODE: - ERUPTION DETAILS: VA TO FL050 LAST OBS AT 24/1030Z EXTD NNW OBS VA DTG: 24/1550Z OBS VA CLD: SFC/FL050 S060500,E1052800 S060900,E1052600 S061100,E1050500 S060100,E1045500 S054800,E1050300 S055000,E1052000 FCST VA CLD +6H: SFC/FL050 S060700,E1052800 S062600,E1050700 S061000,E1045500 S055700,E1050900 S060300,E1052600 FCST VA CLD +12H: SFC/FL050 S060800,E1053900 S062000,E1052400 S061700,E1050500 S055200,E1051000 S055100,E1052900 FCST VA CLD +18H: SFC/FL050 S060800,E1053900 S062000,E1052400 S061700,E1050500 S055200,E1051000 S055200,E1052900 RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGE. VA HEIGHT AND MOVEMENT BASED ON LAST SATELLITE OBS AND MODEL GUIDANCE. NXT ADVISORY: NO LATER THAN 20260724/2210Z= ]]> https://sierra.dev.watchers.news Thu, 23 Jul 2026 01:07:00 +0000 2026/0020-SHEVELUCH-300270-20260723/0107Z VA ADVISORY DTG: 20260723/0107Z VAAC: MONTREAL VOLCANO: SHEVELUCH 300270 PSN: N563900 E1612100 AREA: RUSSIA SUMMIT ELEV: 0 M (0 FT) ADVISORY NR: 2026/0020 INFO SOURCE: GOES-18 AVIATION COLOR CODE: - ERUPTION DETAILS: DISSIPATED VA FM 20260721 ERUPTION OBS VA DTG: 23/0100Z OBS VA CLD: - FCST VA CLD +6H: - FCST VA CLD +12H: - FCST VA CLD +18H: - RMK: VOLCANIC ASH IS NO LONGER VISIBLE IN SATELLITE IMAGERY. VA PRODUCTS AT WEATHER.GC.CA/EER/VAAC/ [ALL LOWER CASE] NXT ADVISORY: NO FURTHER ADVISORIES ]]>