FVXX20 KWBC 151559 VOLCANIC ASH ADVISORY ISSUED: 2004JUL15/1558Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W7826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2004/370 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. ERUPTION DETAILS: GEOPHYSICAL INSTITUTE OBSERVED ASH AT 1450Z OBS ASH DATE/TIME: 15/1515Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/180 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 1450Z THE GEOPHYSICAL INSTITUTE OBSERVED ASH FL165/FL180 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