FVXX21 KNES 200642 VA ADVISORY DTG: 20120420/0641Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 1401-09 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2012/031 INFO SOURCE: GOES-13. GFS WINDS. ERUPTION DETAILS: ONGOING EMISSION OF GASSES AND PSBL VA OBS VA DTG: 20/0615Z OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA WINDS SFC/FL220 270/20-30KT FCST VA CLD +6HR: 20/1230Z FCST VA CLD +12HR: 20/1830Z FCST VA CLD +18HR: 21/0030Z RMK: NGT TIME DARKNESS IS PREVENTING THE DETECTION OF VA IN VISIBLE STLT IMAGERY. A VOLCANIC PLUME IS SEEN IN MULTISPECTRAL IMAGERY MVG E AT 15 KTS BUT IS LIKELY GASSES. VA CONTENT IS PSBL. WX CLDS INVOF SUMMIT. ...RAMIREZ NXT ADVISORY: WILL BE ISSUED BY 20120420/1245Z NNNN