FVXX20 KNES 201149 VA ADVISORY DTG: 20160520/1149Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2016/136 INFO SOURCE: MEXICO CITY MWO. CENAPRED. ERUPTION DETAILS: PSBL VA EM AT 20/1130Z 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