FVXX21 KNES 201249 VA ADVISORY DTG: 20211220/1249Z VAAC: WASHINGTON VOLCANO: SANGAY 352090 PSN: S0200 W07820 AREA: ECUADOR SUMMIT ELEV: 17159 FT (5230 M) ADVISORY NR: 2021/1105 INFO SOURCE: GOES-16. VONA. WEBCAM. NWP MODELS. GEOPHYSICAL INST. ERUPTION DETAILS: VA CLDS OBS IN SUMMIT WEBCAM OBS VA DTG: 20/1230Z OBS VA CLD: SFC/FL210 S0146 W07849 - S0159 W07820 - S0202 W07820 - S0201 W07850 - S0146 W07849 MOV W 10KT FCST VA CLD +6HR: 20/1830Z SFC/FL210 S0132 W07840 - S0200 W07818 - S0202 W07820 - S0147 W07855 - S0132 W07840 FCST VA CLD +12HR: 21/0030Z NO VA EXP FCST VA CLD +18HR: 21/0630Z NO VA EXP RMK: OCNL VA CLDS OBS IN STLT/WEBCAM MOVG W FM SUMMIT. VA DIR/HGT FM 1215Z VONA RPRT FM GI. NWP MDLS SHOWS A W-LY TO NW-LY MOVMT TREND THRU T+6. ...SAMBUCCI NXT ADVISORY: WILL BE ISSUED BY 20211220/1845Z