FVXX20 KNES 300556 VA ADVISORY DTG: 20171230/0556Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2017/332 INFO SOURCE: GOES-EAST. CIMSS VOLCAT. ERUPTION DETAILS: VA EM SEEN ON STLT MOV WEST. 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