FVXX23 KNES 011137 VA ADVISORY DTG: 20211201/1137Z VAAC: WASHINGTON VOLCANO: RUIZ 351020 PSN: N0453 W07519 AREA: COLOMBIA SUMMIT ELEV: 17457 FT (5321 M) ADVISORY NR: 2021/394 INFO SOURCE: GOES-16. VONA. WEBCAM. NWP MODELS. ERUPTION DETAILS: OCNL VA EMS. OBS VA DTG: 01/1100Z OBS VA CLD: SFC/FL220 N0501 W07531 - N0454 W07519 - N0453 W07519 - N0457 W07533 - N0501 W07531 MOV W 10KT FCST VA CLD +6HR: 01/1700Z SFC/FL220 N0501 W07538 - N0454 W07519 - N0453 W07519 - N0449 W07538 - N0501 W07538 FCST VA CLD +12HR: 01/2300Z SFC/FL220 N0458 W07543 - N0453 W07519 - N0452 W07519 - N0447 W07541 - N0458 W07543 FCST VA CLD +18HR: 02/0500Z SFC/FL220 N0456 W07541 - N0454 W07519 - N0452 W07519 - N0444 W07540 - N0456 W07541 RMK: VA OBSD BY G16 MOVG WNW BLO HI WX CLD PTLY OBSCG VIEW. VONA RPRTS VA TO ONLY JUST OVR FL180 BUT NWP MDLS SUGGEST VA TO FL220. NWP MDLS FCST VA TO MOV W BY T+6 WITH LTLCG AFTR. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20211201/1730Z