Satellite observations reported an ash plume from Santiaguito reaching 13,000 ft (4,000 m) at 06:40 UTC on 11 November 2026. Forecasts indicate possible light and variable movement of ash to the south and southeast through the next 12 hours.
Original VAAC bulletin:
FVXX25 at 07:07 UTC, 11/11/26 from KNES
VA ADVISORY
DTG: 20261111/0704Z
VAAC: WASHINGTON
VOLCANO: SANTA MARIA 342030
PSN: N1445 W09133
AREA: GUATEMALA
SOURCE ELEV: 12287 FT AMSL
ADVISORY NR: 2026/675
INFO SOURCE: GOES-19. NWP MODELS.
ERUPTION DETAILS: VA EMS OBS
OBS VA DTG: 11/0640Z
OBS VA CLD: SFC/FL130 N1447 W09149 - N1447 W09132
- N1443 W09132 - N1438 W09153 - N1447 W09149 MOV
W 5KT
FCST VA CLD +6HR: 11/1230Z SFC/FL130 N1446 W09134
- N1442 W09121 - N1435 W09125 - N1443 W09140 -
N1446 W09134
FCST VA CLD +12HR: 11/1830Z SFC/FL130 N1446
W09134 - N1444 W09131 - N1435 W09129 - N1438
W09142 - N1446 W09134
FCST VA CLD +18HR: 12/0030Z NO VA EXP
RMK: VA EMS OBS IN STLT IMG FANNING OUT TO THE W
UP TO APPRX 20NM FM SUMMIT. NWP MDL GUIDANCE
FCSTS LGT AND VARIABLE MOVMT GEN TO THE S TO SE
THRU T+12. HGT BASED ON MOVMT AND NWP MDLS.
...MONAGHAN
NXT ADVISORY: WILL BE ISSUED BY 20261111/1300Z