FVXX20 KNES 201559 VA ADVISORY DTG: 20150420/1559Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2015/128 INFO SOURCE: GOES-EAST. MEXICO CITY MWO. VOLCANO WEB CAMERA. CENAPRED. ERUPTION DETAILS: EMISSION OF VA AT 20/1552Z 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