FVXX24 KNES 141804 VA ADVISORY DTG: 20211214/1804Z VAAC: WASHINGTON VOLCANO: SANTA MARIA 342030 PSN: N1445 W09133 AREA: GUATEMALA SUMMIT ELEV: 12375 FT (3772 M) ADVISORY NR: 2021/021 INFO SOURCE: GOES-16. NWP MODELS. ERUPTION DETAILS: LIGHT VA EMS SW OF SUMMIT OBS VA DTG: 14/1730Z OBS VA CLD: SFC/FL150 N1446 W09132 - N1444 W09132 - N1432 W09143 - N1439 W09149 - N1446 W09132 MOV SW 25KT FCST VA CLD +6HR: 14/2330Z SFC/FL150 N1446 W09132 - N1444 W09132 - N1428 W09149 - N1436 W09155 - N1446 W09132 FCST VA CLD +12HR: 15/0530Z NO VA EXP FCST VA CLD +18HR: 15/1130Z NO VA EXP RMK: DISCRETE VA EMS FANNING OUT APPRX 15NM TO THE SW OF SUMMIT. VA FCST THRU T+6 HRS BASED ON NWP MDLS. ...COVERDALE NXT ADVISORY: WILL BE ISSUED BY 20211215/0000Z