FVXX20 KWBC 231650 VOLCANIC ASH ADVISORY ISSUED: 2004JUN23/1650Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2004/304 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. ERUPTION DETAILS: EMISSIONS OF ASH AND GAS OBS ASH DATE/TIME: 23/1615Z OBS ASH CLOUD: FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: THE LAST OBSERVED ASH BY THE INSTITUTE WAS AT 0209Z. CLOUDS OVER THE VOLCANO MAKE IT DIFFICULT TO DETECT ASH FROM SATELLITE DATA. ...KARST NEXT ADVISORY: WILL BE ISSUED BY 2004JUN23/2245Z NNNN