FVXX20 KWBC 121954 VOLCANIC ASH ADVISORY ISSUED: 2004JUL12/1954Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W7826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2004/360 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. ERUPTION DETAILS: INTERMITTENT EMISSIONS OBS ASH DATE/TIME: 12/1915Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/230 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: IT IS DIFFICULT TO DETECT ASH DUE TO CLOUDS OVER THE VOLCANO. THE LATEST OBSERVATION OF ASH BY THE INSTITUTE WAS AT 12/1820Z TO FL200 ...KARST NEXT ADVISORY: WILL BE ISSUED BY 2004JUL13/0200Z NNNN