Volcanic Ash Advisory Center Washington (VAAC) issued the following report:FVXX20 at 00:17 UTC, 20/12/25 from KNESVA ADVISORYDTG: 20251220/0014ZVAAC: WASHINGTONVOLCANO: REVENTADOR 352010PSN: S0005 W07739AREA: ECUADORSOURCE ELEV: 11686 FT AMSLADVISORY NR: 2025/1297INFO SOURCE: GOES-19. NWP MODELS. ERUPTION DETAILS: VA EMS ONGOINGEST VA DTG: 19/2340ZEST VA CLD: SFC/FL140 S0004 W07739 - S0010 W07735- S0012 W07738 - S0005 W07740 - S0004 W07739 MOVSE 10KT FCST VA CLD +6HR: 20/0530Z SFC/FL140 S0005 W07739- S0010 W07734 - S0012 W07738 - S0005 W07739 -S0005 W07739 FCST VA CLD +12HR: 20/1130Z SFC/FL140 S0004W07740 - S0004 W07739 - S0010 W07734 - S0012W07738 - S0004 W07740 FCST VA CLD +18HR: 20/1730Z NO VA EXPRMK: VA NOT DETECTED ON STLT DUE TO THK WX CLDSIN SUMMIT AREA. VA EMS LIKELY CONTINUE GIVENRECENT ACTVTY. NO CHG FCST TO MDL WINDS AT FRLNXT 12 HR. ...KONONNXT ADVISORY: WILL BE ISSUED BY 20251220/0615Z