Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 22000 ft (6700 m) altitude or flight level 220 .
The full report is as follows:
FVXX21 at 05:31 UTC, 17/04/26 from KNES
VA ADVISORY
DTG: 20260417/0529Z
VAAC: WASHINGTON
VOLCANO: SANGAY 352090
PSN: S0200 W07820
AREA: ECUADOR
SOURCE ELEV: 17342 FT AMSL
ADVISORY NR: 2026/421
INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.
ERUPTION DETAILS: SUMMIT REMAINS OBSCD.
OBS VA DTG: 17/0500Z
OBS VA CLD: SFC/FL220 S0155 W07809 – S0202 W07808
– S0201 W07820 – S0159 W07820 – S0155 W07809 MOV
E 5KT
FCST VA CLD +6HR: 17/1100Z SFC/FL220 S0146 W07811
– S0155 W07804 – S0202 W07820 – S0200 W07820 –
S0146 W07811
FCST VA CLD +12HR: 17/1700Z NO VA EXP
FCST VA CLD +18HR: 17/2300Z NO VA EXP
RMK: DUE TO XTNSV WX CLD CVR OVR AND ARND THE
SUMMIT VA HAS NOT BEEN OBSD SINCE THE PREV ADVY.
WX CLD CVR IS THINNING E OF THE SUMMIT BUT
NOTHING DEFINITIVELY SEEN THERE EITHER. SUMMIT
OBSCD ON WEBCAM AS WELL. FL TAKEN FM PREV ADVY.
NWP MDLS EST VA DRIFTG E WITH DRITG TO NE FCST BY
T+6. …HOSLEY
NXT ADVISORY: WILL BE ISSUED BY 20260417/1130Z