FVXX20 KNES 161406 VA ADVISORY DTG: 20210816/1406Z VAAC: WASHINGTON VOLCANO: FUEGO 342090 PSN: N1428 W09052 AREA: GUATEMALA SUMMIT ELEV: 12346 FT (3763 M) ADVISORY NR: 2021/739 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. ERUPTION DETAILS: VRY FRQT VA EMS. OBS VA DTG: 16/1340Z OBS VA CLD: SFC/FL180 N1506 W09215 - N1429 W09052 - N1426 W09052 - N1452 W09222 - N1506 W09215 MOV W 20KT FCST VA CLD +6HR: 16/1930Z SFC/FL180 N1519 W09247 - N1429 W09052 - N1426 W09053 - N1443 W09249 - N1519 W09247 FCST VA CLD +12HR: 17/0130Z SFC/FL180 N1517 W09250 - N1430 W09052 - N1426 W09052 - N1430 W09150 - N1444 W09255 - N1517 W09250 FCST VA CLD +18HR: 17/0730Z SFC/FL180 N1519 W09247 - N1429 W09052 - N1427 W09051 - N1421 W09142 - N1443 W09301 - N1519 W09247 RMK: NUMEROUS DISCRETE VA EMS OBSD BY BOTH WEBCAM AND G16 STLT. VA EXTDS NEARLY 90 NM WNW OF SUMMIT. EMS OVR PAST HR ARE MOVG MORE W THAN WNW. NWP MDLS FCST WINDS TO BACK T+6 THRU T+18 ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20210816/2000Z