FVXX20 KWBC 172026 VOLCANIC ASH ADVISORY ISSUED: 2003JUN17/2030Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/096 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. ERUPTION DETAILS: ASH EMISSIONS STARTING AT 06/2000Z. OBS ASH DATE/TIME: 17/1945Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL250 MOVING W 10-20 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS REMARKS: EXTENSIVE WEATHER CLOUDS ARE HINDERING ASH DETECTION BY SATELLITE AND THEREFORE NO ASH IS SEEN IN IMAGERY THROUGH 1945Z. THE MOST RECENT KNOWN ASH OBSERVATION WAS BY THE GEOPHYSICAL INSTITUTE THAT REPORTED ASH GOING INTO CLOUDS AT 1145Z. NEXT ADVISORY: WILL BE ISSUED BY 2003JUN18/0230Z. NNNN