FVXX20 KNES 211454 VA ADVISORY DTG: 20121221/1454Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 1401-09 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2012/297 INFO SOURCE: VOLCANO WEB CAMERA. AFWA. ERUPTION DETAILS: POSSIBLE EMISSION OF GASES AND VA 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