FVXX20 KWBC 120732 VOLCANIC ASH ADVISORY ISSUED: 2003OCT12/0730Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/355 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. ERUPTION DETAILS: EXHALATION AT 10/1645Z OBS ASH DATE/TIME: 12/0645Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/180 MOVING W 5-10 KNOTS. FL180/240 MOVING S 5-10 KNOTS. FL240/300 MOVING W 15 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS. REMARKS: NO ASH COULD BE DETECTED IN SATELLITE IMAGERY THROUGH 0045Z DUE TO EXTENSIVE CLOUD COVER. THE GEOPHYSICAL INSTITUTE REPORT FOR SATURDAY INDICATED INTERMITTENT SMALL ERUPTIONS NEARLY 3 TO 4 HOURS APART. THEREFORE UNTIL CLEAR IMAGERY OR THE INSTITUTE INDICATES LESS ACTIVITY WE WILL CONTINUE ADVISORIES WITH MODEL WINDS FORECASTS. NEXT ADVISORY: WILL BE ISSUED BY 2003OCT12/1330Z. NNNN