FVXX20 KNES 251630 VA ADVISORY DTG: 20171225/1630Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2017/309 INFO SOURCE: GOES-EAST. MEXICO CITY MWO. NWP MODELS. ERUPTION DETAILS: POSS VA EMS OBS VA DTG: 25/1600Z OBS VA CLD: SFC/FL190 N1932 W09911 - N1902 W09837 - N1901 W09838 - N1919 W09921 - N1932 W09911 MOV NW 10KT FCST VA CLD +6HR: 25/2200Z SFC/FL190 N1932 W09911 - N1902 W09837 - N1901 W09838 - N1918 W09922 - N1932 W09911 FCST VA CLD +12HR: 26/0400Z SFC/FL190 N1932 W09914 - N1902 W09837 - N1901 W09838 - N1915 W09922 - N1932 W09914 FCST VA CLD +18HR: 26/1000Z SFC/FL190 N1934 W09911 - N1902 W09836 - N1902 W09837 - N1917 W09922 - N1934 W09911 RMK: POSS VA EMS OBS MOV NW IN STLT IMAGERY. STEAM & GAS OBS IN VO WEB CAM WITH LOW ASH CONTENT. +18 FORCAST BASED ON NWP MODEL GUIDANCE. ...FISHER NXT ADVISORY: WILL BE ISSUED BY 20171225/2230Z