A possible volcanic ash emission was reported for Sangay. No ash plume was observed in satellite imagery as of October 3, 2026, 22:40 UTC; forecasts indicate possible ash presence up to FL210 moving northwest.Original VAAC bulletin:FVXX25 at 23:10 UTC, 03/10/26 from KNESVA ADVISORYDTG: 20261003/2308ZVAAC: WASHINGTONVOLCANO: SANGAY 352090PSN: S0200 W07820AREA: ECUADORSOURCE ELEV: 17342 FT AMSLADVISORY NR: 2026/646INFO SOURCE: GOES-19. NWP MODELS. ERUPTION DETAILS: POSS VA EMEST VA DTG: 03/2240ZEST VA CLD: SFC/FL210 S0147 W07825 - S0200 W07819- S0201 W07820 - S0153 W07831 - S0147 W07825 MOVNW 15KT FCST VA CLD +6HR: 04/0430Z SFC/FL210 S0144 W07825- S0200 W07819 - S0201 W07820 - S0152 W07834 -S0144 W07825 FCST VA CLD +12HR: 04/1030Z SFC/FL210 S0146W07825 - S0200 W07819 - S0201 W07820 - S0152W07831 - S0146 W07825 FCST VA CLD +18HR: 04/1630Z NO VA EXPRMK: VA EM/CLD NOT OBSD IN SAT DUE TO EXTENSIVEMET CLD. VA FL/DIR BASED ON PREV ADVY AND MDLGUIDANCE. NWP MDL FCST LTLCG THRU T+12HRS. ...ZENGNXT ADVISORY: WILL BE ISSUED BY 20261004/0515Z