FVXX23 KNES 181418 VA ADVISORY DTG: 20230818/1418Z VAAC: WASHINGTON VOLCANO: SANTA MARIA 342030 PSN: N1445 W09133 AREA: GUATEMALA SUMMIT ELEV: 12287 FT (3745 M) ADVISORY NR: 2023/147 INFO SOURCE: GOES-16. NWP MODELS. ERUPTION DETAILS: INTMT VA EMS OBSD OBS VA DTG: 18/1350Z OBS VA CLD: SFC/FL160 N1448 W09209 - N1446 W09132 - N1444 W09132 - N1441 W09208 - N1448 W09209 MOV W 10KT FCST VA CLD +6HR: 18/2000Z SFC/FL160 N1446 W09132 - N1444 W09131 - N1434 W09214 - N1441 W09216 - N1446 W09132 FCST VA CLD +12HR: 19/0200Z NO VA EXP FCST VA CLD +18HR: 19/0800Z NO VA EXP RMK: INTMT VA EMS OBSD IN SAT AND VA CLDS EXTD APPX 35NMI W FM SUMMIT. NWL MDL FCST SLIGHTLY BACKING THRU T+6HRS. ...ZENG NXT ADVISORY: WILL BE ISSUED BY 20230818/2015Z