Volcanic activity was observed at Santiaguito, with a likely volcanic ash emission reported. Ash height was not directly observed due to cloud cover; forecasts indicate possible movement to the west through the next 12 hours as of September 8, 2026, 09:19 UTC.Original VAAC bulletin:FVXX22 at 09:22 UTC, 08/09/26 from KNESVA ADVISORYDTG: 20260908/0919ZVAAC: WASHINGTONVOLCANO: SANTA MARIA 342030PSN: N1445 W09133AREA: GUATEMALASOURCE ELEV: 12287 FT AMSLADVISORY NR: 2026/510INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. ERUPTION DETAILS: VA EM LKLY EST VA DTG: 08/0850ZEST VA CLD: SFC/FL140 N1454 W09150 - N1446 W09132- N1444 W09132 - N1450 W09152 - N1454 W09150 MOVNW 15KT FCST VA CLD +6HR: 08/1500Z SFC/FL140 N1453 W09152- N1446 W09132 - N1444 W09132 - N1449 W09154 -N1453 W09152 FCST VA CLD +12HR: 08/2100Z SFC/FL140 N1447W09154 - N1446 W09132 - N1444 W09132 - N1443W09154 - N1447 W09154 FCST VA CLD +18HR: 09/0300Z NO VA EXPRMK: VOLCANIC ACTIVITY OBS IN WEBCAM AND IN STLTIMG INT LKLY VA EM. VA NOT DIRECTLY OBS DUE TOMET CLD CVR. EXP MOVEMENT TO SHIFT FM WNW TO WTHRU T+12 HRS. FL BSD ON PAST ACTIVITY. FCST BSDON NWP MDLS. ...LINERNXT ADVISORY: WILL BE ISSUED BY 20260908/1515Z