FVXX20 KWBC 210423 VOLCANIC ASH ADVISORY ISSUED: 2003DEC21/0430Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/628 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. GEOPHYSICAL INSTITUTE. ERUPTION DETAILS: ASH EMISSIONS OBS ASH DATE/TIME: 21/0345Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/220 MOVING TO W 5-10 KNOTS. FCST ASH CLOUD+6H: NOT AVBL FCST ASH CLOUD+12H: NOT AVBL FCST ASH CLOUD+18H: NOT AVBL REMARKS: THE GEOPHYSICAL INSTITUTE INDICATES THAT ASH WAS SEEN AT 21/0220Z. NO DIRECTION WAS GIVEN BUT GFS MODEL WINDS INDICATE ASH WOULD BE MOVING TO THE WEST OF THE SUMMIT. ASH CANNOT BE SEEN IN SATELLITE IMAGERY THROUGH 20/0345Z. CLOUDS IN THE VICINITY OF THE VOLCANO IS MAKING IT DIFFICULT TO DETECT ASH. WE WILL CONTINUE TO MONITOR AND ADVISE AS NEEDED....KIBLER NEXT ADVISORY: WILL BE ISSUED BY 2003DEC21/1030Z. NNNN