Volcanic Ash Advisory Center Washington (VAAC) issued the following report:FVXX20 at 20:58 UTC, 01/01/26 from KNESVA ADVISORYDTG: 20260101/2055ZVAAC: WASHINGTONVOLCANO: REVENTADOR 352010PSN: S0004 W07739AREA: ECUADORSOURCE ELEV: 11686 FT AMSLADVISORY NR: 2026/004INFO SOURCE: GOES-19. NWP MODELS. ERUPTION DETAILS: VA EMS LKLY CONTG.EST VA DTG: 01/2030ZEST VA CLD: SFC/FL160 S0004 W07740 - S0005 W07738- S0017 W07750 - S0011 W07756 - S0004 W07740 MOVSW 10KT FCST VA CLD +6HR: 02/0230Z SFC/FL160 S0004 W07740- S0005 W07738 - S0023 W07753 - S0014 W07802 -S0004 W07740 FCST VA CLD +12HR: 02/0830Z SFC/FL160 S0004W07740 - S0005 W07738 - S0026 W07750 - S0018W07800 - S0004 W07740 FCST VA CLD +18HR: 02/1430Z SFC/FL160 S0004W07740 - S0005 W07739 - S0026 W07751 - S0018W07800 - S0004 W07740 RMK: VA NOT OBSD DUE TO XTNSV WX CLD CVR OVR ANDNEAR THE SUMMIT. HWVR VA CLDS STILL LKLY PRESENTBASED ON RCNT ACT LVLS. NWP MDLS SUG ANY VA SHUDBE MOVG SW THRU T+18HRS. ...HOSLEYNXT ADVISORY: WILL BE ISSUED BY 20260102/0300Z