FVXX24 KNES 210037 VA ADVISORY DTG: 20250521/0037Z VAAC: WASHINGTON VOLCANO: REVENTADOR 352010 PSN: S0004 W07739 AREA: ECUADOR SUMMIT ELEV: 11686 FT (3562 M) ADVISORY NR: 2025/470 INFO SOURCE: GOES-18. VONA. WEBCAM. NWP MODELS. VOLCAT. ERUPTION DETAILS: CONT VA EMS OBS OBS VA DTG: 21/0010Z OBS VA CLD: SFC/FL140 N0000 W07744 - S0004 W07739 - S0002 W07746 - N0000 W07744 MOV NW 10KT FCST VA CLD +6HR: 21/0600Z SFC/FL140 N0000 W07744 - S0004 W07740 - S0002 W07747 - N0000 W07744 FCST VA CLD +12HR: 21/1200Z SFC/FL140 N0000 W07744 - S0004 W07739 - S0002 W07746 - N0000 W07744 FCST VA CLD +18HR: 21/1800Z SFC/FL140 N0000 W07744 - S0004 W07739 - S0002 W07746 - N0000 W07744 RMK: CONT VA EMS OBS MOV NW FM SUMMIT IN STLT IMAGERY. VA FCST TO CONT NW MOV FM SUMMIT THRU T+18HRS BEFORE DISP. VO ACT MODERATE. ...FISHER NXT ADVISORY: WILL BE ISSUED BY 20250521/0630Z