FVXX22 KNES 281428 VOLCANIC ASH ADVISORY ISSUED: 20070728/1427Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 1401-09 LOCATION: N1901 W09837 AREA: MEXICO SUMMIT ELEVATION: 17802 FT (5426 M) ADVISORY NUMBER: 2007/012 INFORMATION SOURCE: MEXICO CITY MWO. GOES-12. VOLCANO WEB CAMERA. ERUPTION DETAILS: NO ERUPTION OBS ASH DATE/TIME: 28/1345Z OBS ASH CLOUD: VA NOT IDENTIFIABLE FROM SATELLITE DATA. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: WHAT WAS THOUGHT TO BE AN ERUPTION TURNED OUT TO BE JUST A STEAM EMISSION. MEXICO CITY HAS CANCLED THEIR SIGMET. IN SATELLITE IMAGERY THE AREA IS CLOUD COVERED AND THE CAMERA SHOWS OCCASTIONAL STEAM PUFFS. ...SWANSON NEXT ADVISORY: NO FURTHER ADVISORIES