FVXX21 KNES 180000 VOLCANIC ASH ADVISORY ISSUED: 2006MAR18/0000Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128 W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2006/123 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12. GFS WINDS. GEOPHYSICAL INST. ERUPTION DETAILS: ASH OBSERVED AT 17/2253Z OBS ASH DATE/TIME: 17/2315Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL200 MOVING TO W 10 KNOTS. FCST ASH CLOUD +6H: 18/0530Z FCST ASH CLOUD +12H: 18/1130Z FCST ASH CLOUD +18H: 18/1730Z REMARKS: THE GEOPHYSICAL INSTITUTE REPORTED OBSERVING ASH TO FL200 MOVING NORTH EAST. ASH IS NOT VISIBLE IN MULTISPECTRAL SATELLITE IMAGERY. THERE IS A DISCREPANCY BETWEEN THE OBSERVED ASH MOVEMENT AND THE MODEL FORECAST WINDS. ...MERCKLE NEXT ADVISORY: WILL BE ISSUED BY 2006MAR18/0600Z NNNN