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 05:00 UTC, 18/04/26 from KNESVA ADVISORYDTG: 20260418/0458ZVAAC: WASHINGTONVOLCANO: SANGAY 352090PSN: S0200 W07820AREA: ECUADORSOURCE ELEV: 17342 FT AMSLADVISORY NR: 2026/425INFO SOURCE: GOES-19. NWP MODELS. ERUPTION DETAILS: LKLY VA SIG OBSD.OBS VA DTG: 18/0420ZOBS VA CLD: SFC/FL210 S0152 W07804 - S0159 W07803- S0201 W07820 - S0200 W07820 - S0152 W07804 MOVE 15KT FCST VA CLD +6HR: 18/1030Z SFC/FL210 S0140 W07800- S0152 W07752 - S0201 W07820 - S0200 W07820 -S0140 W07800 FCST VA CLD +12HR: 18/1630Z SFC/FL210 S0143W07758 - S0156 W07753 - S0201 W07820 - S0159W07820 - S0143 W07758 FCST VA CLD +18HR: 18/2230Z SFC/FL210 S0150W07753 - S0207 W07755 - S0201 W07820 - S0200W07820 - S0150 W07753 RMK: LKLY VA CLD OBSD ABT 15 NMI ENE OF SUMMIT.FL ESTD FM NWP MDLS. NWP MDLS FCST VA TO GENLYMOV NE THRU T+12HRS THEN E-ESE BY T+18HRS....HOSLEYNXT ADVISORY: WILL BE ISSUED BY 20260418/1100Z