A new volcanic ash emission was observed from Santiaguito, with ash reaching 13,000 ft (4,000 m) as of 10:10 UTC on 12 October 2026. Forecasts indicate ash movement to the west-southwest and no ash expected after 22:00 UTC.
Original VAAC bulletin:
FVXX22 at 10:44 UTC, 12/10/26 from KNES
VA ADVISORY
DTG: 20261012/1041Z
VAAC: WASHINGTON
VOLCANO: SANTA MARIA 342030
PSN: N1445 W09133
AREA: GUATEMALA
SOURCE ELEV: 12287 FT AMSL
ADVISORY NR: 2026/595
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: NEW VA EMS
OBS VA DTG: 12/1010Z
OBS VA CLD: SFC/FL130 N1447 W09144 - N1446 W09132
- N1444 W09132 - N1438 W09142 - N1447 W09144 MOV
W 10KT
FCST VA CLD +6HR: 12/1600Z SFC/FL130 N1446 W09132
- N1444 W09132 - N1435 W09155 - N1444 W09157 -
N1446 W09132
FCST VA CLD +12HR: 12/2200Z NO VA EXP
FCST VA CLD +18HR: 13/0400Z NO VA EXP
RMK: VA EMS OBS IN STLT AND WEBCAM APPRX 10 NM
WSW FM SUMMIT. WSW MVMT EXP THRU T+6 ACCORDING TO
NWP MDLS. ...EVANS
NXT ADVISORY: WILL BE ISSUED BY 20261012/1645Z