FVXX20 KNES 041557 VA ADVISORY DTG: 20190804/1557Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2019/657 INFO SOURCE: GOES-EAST. WEB CAM. NWP MODELS. VOLCAT. ERUPTION DETAILS: ONGOING VA EM OBS VA DTG: 04/1541Z OBS VA CLD: SFC/FL200 N1903 W09837 - N1900 W09837 - N1850 W09902 - N1902 W09905 - N1903 W09837 MOV W 10-15KT FCST VA CLD +6HR: 04/2130Z SFC/FL200 N1904 W09837 - N1900 W09836 - N1845 W09910 - N1856 W09912 - N1904 W09837 FCST VA CLD +12HR: 05/0330Z SFC/FL200 N1902 W09837 - N1901 W09835 - N1843 W09914 - N1856 W09917 - N1902 W09837 FCST VA CLD +18HR: 05/0930Z SFC/FL200 N1902 W09837 - N1901 W09836 - N1843 W09914 - N1855 W09917 - N1902 W09837 RMK: VA EM VISIBLE IN STLT IMAGERY MOV WSW FM SUMMIT FL200. NWP MODEL GUIDANCE SUGGETS CONT WINDS TWRDS W THRU T+18 HRS. ...BOLL NXT ADVISORY: WILL BE ISSUED BY 20190804/2200Z