FVXX23 KNES 161211 VA ADVISORY DTG: 20230916/1211Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17693 FT (5393 M) ADVISORY NR: 2023/974 INFO SOURCE: GOES-16. WEBCAM. NWP MODELS. VOLCAT. ERUPTION DETAILS: ONGOING STEAM AND VA EMS OBS VA DTG: 16/1156Z OBS VA CLD: SFC/FL220 N1913 W09838 - N1901 W09837 - N1901 W09837 - N1911 W09844 - N1913 W09838 MOV N 5KT FCST VA CLD +6HR: 16/1800Z SFC/FL220 N1903 W09836 - N1901 W09837 - N1847 W09840 - N1851 W09849 - N1903 W09836 FCST VA CLD +12HR: 17/0000Z SFC/FL220 N1901 W09838 - N1859 W09837 - N1837 W09841 - N1846 W09857 - N1901 W09838 FCST VA CLD +18HR: 17/0600Z SFC/FL220 N1902 W09837 - N1832 W09841 - N1844 W09859 - N1901 W09837 - N1902 W09837 RMK: VA IS CURRENTLY NOT OBS ON STLT DUE TO WX CLDS, A FEW HOURS AGO, VA WAS DETECTED CLOSE TO THE SUMMIT MOVING N. STEAM AND VA EM CAN BE OBS ON WEBCAM. LOWER CONFIDENCE IN VA FCST DUE TO WEAK AND VARIABLE WIND. ...ZHU NXT ADVISORY: WILL BE ISSUED BY 20230916/1815Z