Light volcanic ash emissions are considered likely at Santiaguito based on webcam observations as of September 22, 2026, 02:10 UTC. Satellite detection was not possible due to weather clouds obscuring the summit; forecasts indicate continued light and variable winds.Original VAAC bulletin:FVXX22 at 02:46 UTC, 22/09/26 from KNESVA ADVISORYDTG: 20260922/0244ZVAAC: WASHINGTONVOLCANO: SANTA MARIA 342030PSN: N1445 W09133AREA: GUATEMALASOURCE ELEV: 12287 FT AMSLADVISORY NR: 2026/566INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. ERUPTION DETAILS: LGT VA EMS LKLY.EST VA DTG: 22/0210ZEST VA CLD: SFC/FL140 N1448 W09139 - N1446 W09132- N1445 W09132 - N1444 W09139 - N1448 W09139 MOVW 5KT FCST VA CLD +6HR: 22/0800Z SFC/FL140 N1452 W09141- N1446 W09132 - N1444 W09131 - N1444 W09143 -N1452 W09141 FCST VA CLD +12HR: 22/1400Z SFC/FL140 N1449W09143 - N1446 W09132 - N1444 W09132 - N1443W09143 - N1449 W09143 FCST VA CLD +18HR: 22/2000Z SFC/FL140 N1447W09143 - N1446 W09132 - N1444 W09132 - N1442W09142 - N1447 W09143 RMK: VA NOT OBSD BY STLT DUE TO WX CLD OBSCGSUMMIT. WEBCAM SHOWS LGT EMS OF STEAM WITH PSBLYSOME LGT VA WITHIN. WEBCAM ALSO SHOWS LGT WINDSWITH EMS NOT MOVG FAR FM SUMMIT. NWP MDLS FCSTCONTD LGT AND VRBL WINDS. ...HOSLEYNXT ADVISORY: WILL BE ISSUED BY 20260922/0845Z