FVXX20 KWBC 181756 VOLCANIC ASH ADVISORY ISSUED: 2004JUL18/1756Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W7826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2004/385 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GEOPHYSICAL INSTITUTE. ERUPTION DETAILS: EMISSIONS OF LIGHT ASH OBS ASH DATE/TIME: 18/1715Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/220 MOVING TO W 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 EXTENSIVE CLOUDS OVER THE VOLCANO. THE LATEST OBSERVATION OF ASH FROM THE INSTITUTE WAS AT 17/1300Z ...KARST NEXT ADVISORY: WILL BE ISSUED BY 2004JUL19/0000Z NNNN