FVXX24 KNES 170746 VA ADVISORY DTG: 20211217/0746Z VAAC: WASHINGTON VOLCANO: SANTA MARIA 342030 PSN: N1445 W09133 AREA: GUATEMALA SUMMIT ELEV: 12375 FT (3772 M) ADVISORY NR: 2021/027 INFO SOURCE: ERUPTION DETAILS: CONT VA EMS OBS OBS VA DTG: 17/0720Z OBS VA CLD: SFC/FL150 N1503 W09147 - N1446 W09132 - N1449 W09204 - N1503 W09147 MOV W 10KT FCST VA CLD +6HR: 17/1330Z SFC/FL150 N1505 W09146 - N1445 W09132 - N1451 W09201 - N1505 W09146 FCST VA CLD +12HR: 17/1930Z NO VA EXP FCST VA CLD +18HR: 18/0130Z NO VA EXP RMK: CONT VA EMS OBS MOV W FM THE SUMMIT. VA FCST TO CONT SW MOV FM THE SUMMIT THRU T+6HRS BEFORE DISP. VO ACT MODERATE. ...FISHER NXT ADVISORY: WILL BE ISSUED BY 20211217/1345Z