Volcanic ash was seen in webcam images from Reventador as of 08:30 UTC on 4 November 2026. Forecasts indicate possible continued ash presence up to 18 hours after the observation.Original VAAC bulletin:FVXX21 at 08:59 UTC, 04/11/26 from KNESVA ADVISORYDTG: 20261104/0857ZVAAC: WASHINGTONVOLCANO: REVENTADOR 352010PSN: S0004 W07739AREA: ECUADORSOURCE ELEV: 11686 FT AMSLADVISORY NR: 2026/1164INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. ERUPTION DETAILS: VA SEEN IN WEBCAMEST VA DTG: 04/0830ZEST VA CLD: SFC/FL150 N0001 W07748 - S0004 W07739- S0005 W07740 - S0003 W07750 - N0001 W07748 MOVNW 5KT FCST VA CLD +6HR: 04/1430Z SFC/FL150 N0005 W07757- S0004 W07739 - S0005 W07739 - S0002 W07800 -N0005 W07757 FCST VA CLD +12HR: 04/2030Z SFC/FL150 N0002W07756 - S0004 W07739 - S0005 W07740 - S0004W07758 - N0002 W07756 FCST VA CLD +18HR: 05/0230Z SFC/FL150 N0003W07755 - S0004 W07739 - S0005 W07739 - S0004W07758 - N0003 W07755 RMK: OCNL VA EMS SEEN IN WEBCAM BUT WX CLDS OBSCSTLT IMAGERY. VA FCST THRU T+18 HRS BASED ON NWPMDL GUIDANCE. ...COVERDALENXT ADVISORY: WILL BE ISSUED BY 20261104/1500Z