Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 17000 ft (5200 m) altitude or flight level 170 .The full report is as follows:FVXX20 at 02:15 UTC, 31/12/25 from KNESVA ADVISORYDTG: 20251231/0213ZVAAC: WASHINGTONVOLCANO: REVENTADOR 352010PSN: S0005 W07739AREA: ECUADORSOURCE ELEV: 11686 FT AMSLADVISORY NR: 2025/1345INFO SOURCE: GOES-19. NWP MODELS. ERUPTION DETAILS: VA MOVG WNWOBS VA DTG: 31/0140ZOBS VA CLD: SFC/FL170 N0002 W07757 - S0004 W07739- S0005 W07739 - S0004 W07759 - N0002 W07757 MOVW 15KT FCST VA CLD +6HR: 31/0730Z SFC/FL170 N0003 W07800- S0004 W07739 - S0005 W07739 - S0007 W07801 -N0003 W07800 FCST VA CLD +12HR: 31/1330Z SFC/FL170 N0003W07800 - S0004 W07739 - S0005 W07739 - S0007W07801 - N0003 W07800 FCST VA CLD +18HR: 31/1930Z SFC/FL170 N0001W07759 - S0004 W07739 - S0005 W07739 - S0007W07800 - N0001 W07759 RMK: INTMT VA EMS OBS IN STLT IMAGERY MOVG APPRX20NM WNW FM SUMMIT. VA FCST THRU T+18 HRS BASEDON NWP MDL GUIDANCE SUGGESTING LTLCG IN FL WINDS. ...COVERDALENXT ADVISORY: WILL BE ISSUED BY 20251231/0815Z