FVXX20 KWBC 180231 VOLCANIC ASH ADVISORY ISSUED: 2003JUN18/0230Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/097 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. ERUPTION DETAILS: ASH EMISSIONS STARTING AT 06/2000Z. OBS ASH DATE/TIME: 18/0145Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL290 MOVING W 5-20 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS REMARKS: AT 0125Z THE GEOPHYSICAL INSTITUTE OBSERVED ASH TO FL290 MOVING WEST. A HOTSPOT CAN BE SEEN IN SATELLITE IMAGERY AT 0045Z AND 0115Z BUT NOT AT 0145Z. EXTENSIVE WEATHER CLOUDS ARE PREVENTING ASH DETECTION BY SATELLITE AND THEREFORE NO ASH IS SEEN IN IMAGERY THROUGH 0145Z. NEXT ADVISORY: WILL BE ISSUED BY 2003JUN18/0830Z. NNNN