Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Washington warned of a volcanic ash plume rising to an estimated 15000 ft (4600 m), or flight level 150.Original VAAC bulletin:FVXX21 at 14:12 UTC, 17/09/26 from KNESVA ADVISORYDTG: 20260917/1408ZVAAC: WASHINGTONVOLCANO: REVENTADOR 352010PSN: S0004 W07739AREA: ECUADORSOURCE ELEV: 11686 FT AMSLADVISORY NR: 2026/959INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. ERUPTION DETAILS: VA EM OBSDOBS VA DTG: 17/1340ZOBS VA CLD: SFC/FL150 S0002 W07755 - S0004 W07740- S0005 W07740 - S0007 W07755 - S0002 W07755 MOVW 20KT FCST VA CLD +6HR: 17/1930Z SFC/FL150 S0001 W07756- S0004 W07739 - S0005 W07739 - S0008 W07757 -S0001 W07756 FCST VA CLD +12HR: 18/0130Z SFC/FL150 S0000W07757 - S0004 W07739 - S0005 W07739 - S0008W07758 - S0000 W07757 FCST VA CLD +18HR: 18/0730Z NO VA EXPRMK: VA EM OBSD IN SAT AND EARLIER WEBCAM. VA CLDSPOTTED APRX 15 NM W FM SUMMIT AMONG DENSE METCLD. NWP MDL FCST LTLCG THRU T+12HRS. ...ZENGNXT ADVISORY: WILL BE ISSUED BY 20260917/2015Z