FVXX22 KNES 011636 VA ADVISORY DTG: 20090401/1636Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 1401-09 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2009/009 INFO SOURCE: MEXICO CITY MWO. ERUPTION DETAILS: BRIEF EMISSION AT 1617Z TO FL220 MOV TO NE. RMK: WE HAVE RECEIVED INFORMATION SUGGESTING A POSSIBLE VA EMISSION. WE WILL GATHER FURTHER INFORMATION AND ISSUE A FULL ADVISORY AS SOON AS POSSIBLE. NXT ADVISORY: AS SOON AS POSSIBLE NNNN