FVXX20 KNES 282123 VA ADVISORY DTG: 20110828/2123Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 1401-09 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT (5426 M) ADVISORY NR: 2011/040 INFO SOURCE: GOES-13. GFS WINDS. ERUPTION DETAILS: VA NOT OBSERVED IN STLT IMAGERY OBS VA DTG: 28/2045Z OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE DATA. FCST VA CLD +6HR: 29/0300Z FCST VA CLD +12HR: 29/0900Z FCST VA CLD +18HR: 29/1500Z RMK: VA NOT OBSERVED IN STLT IMAGERY. ...SALEMI NXT ADVISORY: NO FURTHER ADVISORIES NNNN