Possible volcanic ash emissions were reported for Reventador, but no ash plume or height was observed as of the latest advisory on October 4, 2026, at 20:27 UTC. Forecasts indicate potential ash movement to the west, but observations may be obscured by meteorological clouds.Original VAAC bulletin:FVXX21 at 20:30 UTC, 04/10/26 from KNESVA ADVISORYDTG: 20261004/2027ZVAAC: WASHINGTONVOLCANO: REVENTADOR 352010PSN: S0004 W07739AREA: ECUADORSOURCE ELEV: 11686 FT AMSLADVISORY NR: 2026/1032INFO SOURCE: GOES-19. NWP MODELS. ERUPTION DETAILS: PSBL VA EMSEST VA DTG: 04/1950ZEST VA CLD: SFC/FL150 S0001 W07749 - S0004 W07739- S0005 W07740 - S0005 W07750 - S0001 W07749 MOVNW 5KT FCST VA CLD +6HR: 05/0200Z SFC/FL150 N0000 W07749- S0004 W07739 - S0005 W07740 - S0003 W07750 -N0000 W07749 FCST VA CLD +12HR: 05/0800Z SFC/FL150 S0002W07750 - S0004 W07739 - S0005 W07739 - S0006W07750 - S0002 W07750 FCST VA CLD +18HR: 05/1400Z SFC/FL150 S0001W07749 - S0004 W07739 - S0005 W07739 - S0005W07750 - S0001 W07749 RMK: VA EMS NOT OBSD IN STLT IMG PSBLY DUE TO METCLDS. VA EMS MAY BE OBSCD. WNW MVMT EXP TO SHIFTMORE W BY T+6 HRS. MVMT AND HGT BASED ON NWPMDLS. ...BERTALANNXT ADVISORY: WILL BE ISSUED BY 20261005/0230Z