FVXX25 KNES 101249 VA ADVISORY DTG: 20250510/1249Z VAAC: WASHINGTON VOLCANO: POAS 345040 PSN: N1011 W08413 AREA: COSTA_RICA SUMMIT ELEV: 8848 FT (2697 M) ADVISORY NR: 2025/121 INFO SOURCE: GOES-19. WEBCAM. NWP MODELS. ERUPTION DETAILS: VA PSBLY OBSD. OBS VA DTG: 10/1220Z OBS VA CLD: SFC/FL110 N1013 W08419 - N1012 W08414 - N1011 W08413 - N1010 W08419 - N1013 W08419 MOV W 10KT FCST VA CLD +6HR: 10/1830Z SFC/FL110 N1016 W08422 - N1012 W08413 - N1011 W08413 - N1011 W08423 - N1016 W08422 FCST VA CLD +12HR: 11/0030Z SFC/FL110 N1013 W08422 - N1012 W08413 - N1011 W08413 - N1008 W08422 - N1013 W08422 FCST VA CLD +18HR: 11/0630Z NO VA EXP RMK: WEBCAM MAINLY OBSCD BUT DOES SHOW HINT OF EMS. UNCERTAINTY EXISTS ON VA CONTENT. VA NOT OBSD BY STLT EVEN WITH A FEW SML BINOVC DOWNWIND OF SUMMIT. NWP MDLS FCST VA TO MOV WNW BY T+6 THEN BACK TO WSW BY T+12. ...HOSLEY NXT ADVISORY: WILL BE ISSUED BY 20250510/1845Z