FVXX20 KWBC 072238 VOLCANIC ASH ADVISORY ISSUED: 2003SEP07/2300Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/222 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. GEOPHYSICAL INSTITUTE. ERUPTION DETAILS: ONGOING ERUPTION SINCE AUG20/1745Z. OBS ASH DATE/TIME: 07/2215Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/250 MOVING W 5-10 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS. REMARKS: WEATHER CLOUDS OBSCURE THE SUMMIT OF TUNGURAHUA AND THE POSSIBILITY OF ASH DETECTION. GEOPHYSICAL INSTITUTE REPORT INDICATES OCCASIONAL ERUPTIONS CONTAINING MOSTLY STEAM...BUT HAVE NOT RECEIVED ANY PILOT/SFC REPORTS INDICATING ASH OVER THE PAST 6 HOURS...GALLINA NEXT ADVISORY: WILL BE ISSUED BY 2003SEP08/0500Z. NNNN