FVXX20 KNES 041320 VA ADVISORY DTG: 20130804/1320Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 1401-09 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2013/220 INFO SOURCE: MEXICO CITY MWO. VOLCANO WEB CAMERA. ERUPTION DETAILS: MEXICO CITY MWO RPRTS EMISSION OF CONTINUOUS ASH TO EST FL200 MOV W ARND 10-15KT. 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