FVXX23 KWBC 160117 VOLCANIC ASH ADVISORY ISSUED: 2003JUL16/0100Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 1401-09 LOCATION: N1901W09837 AREA: MEXICO SUMMIT ELEVATION: 17930 FT (5465 M) ADVISORY NUMBER: 2003/099 INFORMATION SOURCE: GOES-12 IMAGERY. MEXICO CITY MWO. CENAPRED. GFS MODEL WINDS FORECAST ERUPTION DETAILS: EXHALATION AT 15/2355Z OBS ASH DATE/TIME: 16/0015Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL260 MOVING NW 10 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS REMARKS: THE MEXICO CITY MWO REPORTS THAT CENAPRED OBSERVED AN EXHALATION OF THE VOLCANO AT 15/2355Z WITH ASH TO FL260 MOVING NORTH. CURRENT SATELLITE IMAGERY SHOWS EXTENSIVE CLOUDS OVER THE AREA MAKING DETECTION OF ASH DIFFICULT....WALTER NEXT ADVISORY: WILL BE ISSUED BY 2003JUL16/0700Z NNNN