FVXX20 KWBC 070923 VOLCANIC ASH ADVISORY ISSUED: 2003OCT07/0930Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/334 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. ERUPTION DETAILS: SERIES OF EMISSIONS STARTING AT 21/2345Z OBS ASH DATE/TIME: 07/0845Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/180 MOVING W 5-10 KNOTS. FL200/270 MOVING N 5-10 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS. REMARKS: THE MOST RECENT KNOWN ASH OBSERVATION WAS AT 06/2255Z WHEN A PILOT OBSERVED ASH TO FL270. A POSSIBLE WEAK INTERMITTENT HOTSPOT CAN BE SEEN IN SATELLITE IMAGERY. NO ASH CAN BE SEEN IN IMAGERY THROUGH 07/0845Z BUT LOW LEVEL WEATHER CLOUDS COULD BE PREVENTING ASH DETECTION. NEXT ADVISORY: WILL BE ISSUED BY 2003OCT07/1530Z. NNNN