Occasional volcanic ash emissions have been reported for Santiaguito. As of 29 September 2026 at 19:40 UTC, ash was not currently detected by satellite, but emissions remain possible according to recent activity and model forecasts.Original VAAC bulletin:FVXX26 at 20:13 UTC, 29/09/26 from KNESVA ADVISORYDTG: 20260929/2010ZVAAC: WASHINGTONVOLCANO: SANTA MARIA 342030PSN: N1445 W09133AREA: GUATEMALASOURCE ELEV: 12287 FT AMSLADVISORY NR: 2026/583INFO SOURCE: GOES-19. NWP MODELS. ERUPTION DETAILS: OCNL VA EMSEST VA DTG: 29/1940ZEST VA CLD: SFC/FL140 N1445 W09132 - N1435 W09131- N1435 W09135 - N1445 W09133 - N1445 W09132 MOVS 10KT FCST VA CLD +6HR: 30/0130Z SFC/FL140 N1446 W09132- N1435 W09130 - N1435 W09134 - N1445 W09133 -N1446 W09132 FCST VA CLD +12HR: 30/0730Z SFC/FL140 N1446W09132 - N1435 W09129 - N1435 W09133 - N1445W09133 - N1446 W09132 FCST VA CLD +18HR: 30/1330Z NO VA EXPRMK: VA NOT CRNTLY DETECTED IN STLT IMG. VA EMSREMAIN PSBL DUE TO RCNT ACT. MDL WINDS SUG S MVMTEXP THRU T+12. ...GATLINGNXT ADVISORY: WILL BE ISSUED BY 20260930/0215Z