FVXX21 KWBC 162337 VOLCANIC ASH ADVISORY ISSUED: 2003APR16/2330Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/043 INFORMATION SOURCE: GUAYAQUIL MWO SIGMET. GEOPHYSICAL INSTITUTE. GFS MODEL WINDS FORECAST ERUPTION DETAILS: ASH OBSERVED AT 16/2215Z. OBS ASH DATE/TIME: NIL OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL230 MOVING SW 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS REMARKS: THE GEOPHYSICAL INSTITUTE OBSERVED A VOLCANIC ASH CLOUD OVER THE VOLCANO AT 2215Z EXTENDING UP TO FL230. NO DIRECTION OR SPEED OF MOVEMENT WAS GIVEN. SATELLITE IMAGERY THROUGH 2245Z IS TOO CLOUDY FOR ANY ASH TO BE VISIBLE. NEXT ADVISORY: WILL BE ISSUED BY 2003APR17/0530Z NNNN