Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 14000 ft (4300 m), or flight level 140.
Original VAAC bulletin:
FVXX22 at 11:24 UTC, 21/08/26 from KNES
VA ADVISORY -CORRECTION
DTG: 20260821/1122Z
VAAC: WASHINGTON
VOLCANO: REVENTADOR 352010
PSN: S0004 W07739
AREA: ECUADOR
SOURCE ELEV: 11686 FT AMSL
ADVISORY NR: 2026/851
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS ONGOING
OBS VA DTG: 21/1050Z
OBS VA CLD: SFC/FL140 N0007 W07753 - S0005 W07738
- S0005 W07740 - N0003 W07756 - N0007 W07753 MOV
NW 25KT
FCST VA CLD +6HR: 21/1700Z SFC/FL140 N0009 W07753
- S0004 W07739 - S0005 W07740 - N0005 W07756 -
N0009 W07753
FCST VA CLD +12HR: 21/2300Z SFC/FL140 N0011
W07751 - S0004 W07739 - S0005 W07740 - N0008
W07753 - N0011 W07751
FCST VA CLD +18HR: 22/0500Z SFC/FL140 N0005
W07756 - S0004 W07739 - S0005 W07739 - N0001
W07757 - N0005 W07756
RMK: COR FOR SOURCE. VONA RCVD RPRTNG VA EMS UP
TO FL 140. VA EMS OBSD ON STLT IMG. FQNT VOL
ACTIVITY SEEN ON WEBCAM. NWP MDL FCST VA EMS
MOVNG WNW THRU T+18. ...BUTLER
NXT ADVISORY: WILL BE ISSUED BY 20260821/1715Z