FVXX20 KWBC 280755 VOLCANIC ASH ADVISORY ISSUED: 2004JUL28/0755Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W7826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2004/423 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. ERUPTION DETAILS: ASH EMISSIONS STARTING AROUND 26/1837Z OBS ASH DATE/TIME: 28/0715Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL200 MOVING TO W 10-20 KNOTS. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: ASH CAN NOT BE SEEN IN THE CURRENT SATELLITE IMAGERY THROUGH 28/0215Z. WALTER ... NEXT ADVISORY: WILL BE ISSUED BY 2004JUL28/1400Z NNNN