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 KNES
VA ADVISORY
DTG: 20261104/0857Z
VAAC: WASHINGTON
VOLCANO: REVENTADOR 352010
PSN: S0004 W07739
AREA: ECUADOR
SOURCE ELEV: 11686 FT AMSL
ADVISORY NR: 2026/1164
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA SEEN IN WEBCAM
EST VA DTG: 04/0830Z
EST VA CLD: SFC/FL150 N0001 W07748 - S0004 W07739
- S0005 W07740 - S0003 W07750 - N0001 W07748 MOV
NW 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 N0002
W07756 - S0004 W07739 - S0005 W07740 - S0004
W07758 - N0002 W07756
FCST VA CLD +18HR: 05/0230Z SFC/FL150 N0003
W07755 - S0004 W07739 - S0005 W07739 - S0004
W07758 - N0003 W07755
RMK: OCNL VA EMS SEEN IN WEBCAM BUT WX CLDS OBSC
STLT IMAGERY. VA FCST THRU T+18 HRS BASED ON NWP
MDL GUIDANCE. ...COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20261104/1500Z