FVXX21 KNES 071328 VA ADVISORY DTG: 20230907/1328Z VAAC: WASHINGTON VOLCANO: SHISHALDIN 311360 PSN: N5445 W16358 AREA: ALEUTIAN.IS SUMMIT ELEV: 9373 FT (2857 M) ADVISORY NR: 2023/015 INFO SOURCE: GOES-18. NWP MODELS. ERUPTION DETAILS: NO ERUPTION. DETACHED VA CLD OBS VA DTG: 07/1321Z OBS VA CLD: SFC/FL310 N4647 W13821 - N4647 W13608 - N4337 W13710 - N4433 W13908 - N4647 W13821 MOV NW 20KT FCST VA CLD +6HR: 07/1930Z SFC/FL310 N4656 W13752 - N4639 W13013 - N4046 W13141 - N4416 W13843 - N4656 W13752 FCST VA CLD +12HR: 08/0130Z NO VA EXP FCST VA CLD +18HR: 08/0730Z NO VA EXP RMK: DETACHED VA CLD DETECTED FM STLT DATA MV SE. LTLCG IN MDL WINDS FCST THRU T+6 HRS. ...BROWN NXT ADVISORY: WILL BE ISSUED BY 20230907/1930Z