Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 21000 ft (6400 m) altitude or flight level 210 .
The full report is as follows:
FVXX21 at 12:22 UTC, 20/04/26 from KNES
VA ADVISORY
DTG: 20260420/1220Z
VAAC: WASHINGTON
VOLCANO: SANGAY 352090
PSN: S0200 W07820
AREA: ECUADOR
SOURCE ELEV: 17342 FT AMSL
ADVISORY NR: 2026/435
INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.
ERUPTION DETAILS: VA EMS MOVG E
OBS VA DTG: 20/1200Z
OBS VA CLD: SFC/FL210 S0159 W07745 – S0207 W07746
– S0201 W07820 – S0159 W07820 – S0159 W07745 MOV
E 5KT
FCST VA CLD +6HR: 20/1800Z SFC/FL210 S0153 W07744
– S0202 W07743 – S0201 W07820 – S0159 W07820 –
S0153 W07744
FCST VA CLD +12HR: 21/0000Z SFC/FL210 S0155
W07755 – S0204 W07755 – S0201 W07820 – S0159
W07820 – S0155 W07755
FCST VA CLD +18HR: 21/0600Z SFC/FL210 S0200
W07820 – S0201 W07758 – S0210 W07801 – S0201
W07820 – S0200 W07820
RMK: RCNT VA EMS OBS IN STLT IMAGERY MOVG APPRX
35NM E FM SUMMIT. RCNT VONA RPRT RCVD. VA CRNTLY
OBSCD BY WX CLDS. VA FCST THRU T+18 HRS BASED ON
NWP MDL GUIDANCE. …COVERDALE
NXT ADVISORY: WILL BE ISSUED BY 20260420/1815Z