FVXX21 KNES 210137 VA ADVISORY DTG: 20120721/0136Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 1401-09 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2012/257 INFO SOURCE: MEXICO CITY MWO. GOES-13. NAM WINDS. VOLCANO WEB CAMERA. ERUPTION DETAILS: ERUPTION PRIOR TO 21/0101Z OBS VA DTG: 21/0115Z OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA WINDS SFC/FL220 045/10-15KT FCST VA CLD +6HR: 21/0730Z FCST VA CLD +12HR: 21/1330Z FCST VA CLD +18HR: 21/1930Z RMK: VA NOT SEEN IN STLT IMAGERY DUE TO WX CLDS IN DARKNESS, HWVR VA IS VISIBLE IN VOLCANO WEB CAMERA. LTLCG IN WIND SPEED OR DIRECTION IS FORECAST OVER NEXT 18 HRS. ...GUILLOT NXT ADVISORY: WILL BE ISSUED BY 20120721/0730Z NNNN