FVXX20 KWBC 041953 VOLCANIC ASH ADVISORY ISSUED: 2003SEP04/2000Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/210 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: ONGOING ERUPTION SINCE 20AUG/1745Z. OBS ASH DATE/TIME: 04/1915Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/210 MOVING 10-15 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS AND VAFTAD. REMARKS: ASH IS NOT VISIBLE IN THE CURRENT SATELLITE IMAGERY THROUGH 04/1915Z. AN AIRCRAFT REPORT AT 04/1744Z PLACED THE ASH CLOUD AT FL210. IN ADDITION..THE ASH SEEN EARLIER THIS MORNING CAN NO LONGER BE DETECTED IN ANY OF THE SATELLITE IMAGERY....WALTER NEXT ADVISORY: WILL BE ISSUED BY 2003SEP05/0200Z. NNNN