FVXX20 KNES 191733 VA ADVISORY DTG: 20130919/1733Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 1401-09 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2013/255 INFO SOURCE: ERUPTION DETAILS: OBS VA DTG: /Z OBS VA CLD: FCST VA CLD +6HR: 19/2300Z FCST VA CLD +12HR: 20/0500Z FCST VA CLD +18HR: 20/1100Z RMK: SUBMITTED BY AFWA (FULL VAA) ... NXT ADVISORY: WILL BE ISSUED BY 20130919/2200Z