FVXX20 KWBC 200559 VOLCANIC ASH ADVISORY ISSUED: 2003JUN20/0600Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/106 INFORMATION SOURCE: GOES-12 IMAGERY. GUAYAQUIL MWO SIGMET. GFS MODEL WINDS FORECAST ERUPTION DETAILS: ASH EMISSIONS STARTING AT 06/2000Z. OBS ASH DATE/TIME: 20/0515Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL260 MOVING W 15 - 20 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS. REMARKS: ASH CANNOT BE SEEN IN SATELLITE IMAGERY THROUGH 20/0515Z DUE TO EXTENSIVE WEATHER CLOUDS. THE GEOPHYSICAL INSTITUTE REPORTS ASH OBSERVED AT 20/0332Z TO FL230. NEXT ADVISORY: WILL BE ISSUED BY 2003JUN20/1200Z NNNN