A volcanic ash emission was detected at Santiaguito. Ash was observed from the summit by webcam at 11:40 UTC on October 5, but no specific ash plume height was reported.Original VAAC bulletin:FVXX22 at 12:10 UTC, 05/10/26 from KNESVA ADVISORYDTG: 20261005/1205ZVAAC: WASHINGTONVOLCANO: SANTA MARIA 342030PSN: N1445 W09133AREA: GUATEMALASOURCE ELEV: 12287 FT AMSLADVISORY NR: 2026/592INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. ERUPTION DETAILS: VA EM DTCTDEST VA DTG: 05/1140ZEST VA CLD: SFC/FL130 N1505 W09134 - N1444 W09132- N1444 W09134 - N1502 W09146 - N1505 W09134 MOVN 10KT FCST VA CLD +6HR: 04/1730Z SFC/FL130 N1511 W09134- N1444 W09132 - N1444 W09134 - N1509 W09146 -N1511 W09134 FCST VA CLD +12HR: 04/2330Z NO VA EXPFCST VA CLD +18HR: 05/0530Z NO VA EXPRMK: VA EM FM SUMMIT OBS IN WEBCAM. VA NOT OBS INSTLT IMG DUE TO MET CLD CVR. EXP NNW MOVEMENTTHRU T+6 HRS. FL BSD ON PAST ACTIVITY. FCST BSDON NWP MDLS. ...LINERNXT ADVISORY: WILL BE ISSUED BY 20261005/1800Z