Possible volcanic ash emissions from Reventador were indicated, but no recent ash was observed in satellite or webcam imagery as of October 21, 2026, 23:20 UTC. Forecasts suggest potential ash movement northwest through the next 12 hours.Original VAAC bulletin:FVXX21 at 23:48 UTC, 21/10/26 from KNESVA ADVISORYDTG: 20261021/2345ZVAAC: WASHINGTONVOLCANO: REVENTADOR 352010PSN: S0004 W07739AREA: ECUADORSOURCE ELEV: 11686 FT AMSLADVISORY NR: 2026/1107INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. ERUPTION DETAILS: VA EMS PSBLEST VA DTG: 21/2320ZEST VA CLD: SFC/FL160 N0001 W07747 - S0004 W07739- S0005 W07740 - S0001 W07749 - N0001 W07747 MOVNW 10KT FCST VA CLD +6HR: 22/0530Z SFC/FL160 N0010 W07748- S0004 W07739 - S0005 W07740 - N0005 W07752 -N0010 W07748 FCST VA CLD +12HR: 22/1130Z SFC/FL160 N0005W07746 - S0004 W07739 - S0005 W07740 - N0001W07750 - N0005 W07746 FCST VA CLD +18HR: 22/1730Z NO VA EXPRMK: VA EMS REMAIN PSBL NW FM SUMMIT BUT NO RCNTVA OBS IN STLT IMAGERY OR SEEN IN WEBCAM DUE TOWX CLDS. VA FCST THRU T+12 HRS BASED ON NWP MDLS. ...COVERDALENXT ADVISORY: WILL BE ISSUED BY 20261022/0545Z