FVXX20 KWBC 151606 VOLCANIC ASH ADVISORY ISSUED: 2004JUL15/1606Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W7826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2004/371 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. ERUPTION DETAILS: GEOPHYSICAL INSTITUTE OBSERVED ASH AT 1450Z AND AGAIN AT 1530Z OBS ASH DATE/TIME: 15/1545Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/210 MOVING TO NW 15-20 KNOTS. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: AT 1530Z THE GEOPHYSICAL INSTITUTE OBSERVED ASH FL165/FL210 MOVING NW. NO ASH CAN BE SEEN IN SATELLITE IMAGERY BUT WEATHER CLOUDS THROUGHOUT THE AREA ARE HINDERING ASH DETECTION. ... NEXT ADVISORY: WILL BE ISSUED BY 2004JUL15/2200Z NNNN