FVXX20 KWBC 210428 VOLCANIC ASH ADVISORY ISSUED: 2004JUL21/0428Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W7826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2004/396 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. ERUPTION DETAILS: ASH LAST OBSERVED 21/0333Z. OBS ASH DATE/TIME: 21/0345Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL230 MOVING TO W 10-15 KNOTS. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: THE GEOPHYSICAL INSTITUTE OBSERVED ASH TO FL165 AT 0333Z. NO ASH WAS DETECTED IN SATELLITE IMAGERY THROUGH 0345Z. ...TURK NEXT ADVISORY: WILL BE ISSUED BY 2004JUL21/1030Z NNNN