FVXX20 KWBC 231237 VOLCANIC ASH ADVISORY ISSUED: 2004JUL23/1236Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W7826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2004/406 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS OBS ASH DATE/TIME: 23/1145Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/200 MOVING TO SW 10 KNOTS. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: THE LATEST OBSERVATION OF ASH BY THE INSTITUTE WAS AT 23/1002Z TO FL165 MOVING TO SW. ASH IS NOT IDENTIFIABLE FROM SATELLITE DATA. ...BROWN NEXT ADVISORY: WILL BE ISSUED BY 2004JUL23/1830Z NNNN