FVXX20 KNES 281535 VA ADVISORY DTG: 20110828/1534Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 1401-09 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2011/039 INFO SOURCE: MEXICO CITY MWO. GOES-13. NAM WINDS. CENAPRED. ERUPTION DETAILS: EXHALATION AT28/1340Z OBS VA DTG: 28/1515Z OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA WINDS SFC/FL200 360/5-10KT FCST VA CLD +6HR: 28/2130Z FCST VA CLD +12HR: 29/0330Z FCST VA CLD +18HR: 29/0930Z RMK: MEXICO CITY MWO/CENAPRED REPORT VA EMISSION AT 1340Z. CLOUD COVER HINDERS DETECTION IN STLT IMAGERY. ...GUILLOT NXT ADVISORY: WILL BE ISSUED BY 20110828/2130Z NNNN