Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 16000 ft (4900 m) altitude or flight level 160 .The full report is as follows:FVXX23 at 20:24 UTC, 18/04/26 from KNESVA ADVISORYDTG: 20260418/2021ZVAAC: WASHINGTONVOLCANO: REVENTADOR 352010PSN: S0004 W07739AREA: ECUADORSOURCE ELEV: 11686 FT AMSLADVISORY NR: 2026/370INFO SOURCE: GOES-19. NWP MODELS. ERUPTION DETAILS: VA EM DETECTED OBS VA DTG: 18/1950ZOBS VA CLD: SFC/FL160 N0014 W07732 - N0006 W07719- S0005 W07739 - S0005 W07740 - N0014 W07732 MOVNE 10KT FCST VA CLD +6HR: 19/0200Z SFC/FL160 N0000 W07710- S0014 W07710 - S0006 W07740 - S0004 W07740 -N0000 W07710 FCST VA CLD +12HR: 19/0800Z SFC/FL160 S0001W07710 - S0017 W07712 - S0006 W07740 - S0004W07740 - S0001 W07710 FCST VA CLD +18HR: 19/1400Z SFC/FL160 S0004W07739 - S0013 W07708 - S0029 W07720 - S0006W07741 - S0004 W07739 RMK: VA EM SEEN IN STLT IMG MOVNG NE FM SUMMIT.EXP SHIFT IN MOVNT TO ESE THRU T+18 HRS. FL BSDON PST ACTIVITY AND NWP MDLS. FCST BSD ON NWPMDLS. ...LINERNXT ADVISORY: WILL BE ISSUED BY 20260419/0215Z