FVXX20 KWBC 251919 VOLCANIC ASH ADVISORY ISSUED: 2004MAY25/1918Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2004/217 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. ERUPTION DETAILS: ASH EMISSION AT 25/1800Z OBS ASH DATE/TIME: 25/1845Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL230 MOVING TO W 15-20 KNOTS. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: THE INSTITUTE OBSERVED ASH OVER THE VOLCANO AT 1800Z TO FL230 MOVING TOWARDS THE WEST. UPPER AIR WIND FORECASTS ESTIMATE THE SPEED OF MOVEMENT AT 15-20 KTS ...KARST NEXT ADVISORY: WILL BE ISSUED BY 2004MAY26/0115Z NNNN