Light volcanic ash emissions were observed from Reventador. The advisory was issued by the Washington VAAC on 22 September 2026 at 17:14 UTC, with ash detected extending approximately 15 nautical miles west-northwest from the summit and forecasts indicating continued movement.Original VAAC bulletin:FVXX21 at 17:15 UTC, 22/09/26 from KNESVA ADVISORYDTG: 20260922/1714ZVAAC: WASHINGTONVOLCANO: REVENTADOR 352010PSN: S0005 W07739AREA: ECUADORSOURCE ELEV: 11686 FT AMSLADVISORY NR: 2026/980INFO SOURCE: GOES-19. NWP MODELS. ERUPTION DETAILS: LGT VA EMSEST VA DTG: 22/1620ZEST VA CLD: SFC/FL140 S0000 W07753 - S0004 W07739- S0005 W07739 - S0004 W07755 - S0000 W07753 MOVNW 10KT FCST VA CLD +6HR: 22/2230Z SFC/FL140 S0001 W07756- S0004 W07739 - S0005 W07739 - S0006 W07756 -S0001 W07756 FCST VA CLD +12HR: 23/0430Z SFC/FL140 S0001W07756 - S0004 W07740 - S0005 W07739 - S0007W07757 - S0001 W07756 FCST VA CLD +18HR: 23/1030Z SFC/FL140 S0001W07756 - S0004 W07740 - S0005 W07739 - S0007W07756 - S0001 W07756 RMK: VA EMS OBSD IN STLT IMG EXTG APPRX 15 NM WNWFM SUMMIT. A MORE W MVMT EXP BY T+6 HRS. MVMT ANDHGT BASED ON STLT OBS AND NWP MDLS. ...BERTALANNXT ADVISORY: WILL BE ISSUED BY 20260922/2315Z