FVXX20 KNES 241424 VOLCANIC ASH ADVISORY ISSUED: 20070324/1423Z VAAC: WASHINGTON VOLCANO: REVENTADOR 1502-01 LOCATION: S0004 W07740 AREA: ECUADOR SUMMIT ELEVATION: 11686 FT (3562 M) ADVISORY NUMBER: 2007/006 INFORMATION SOURCE: GOES-12. GFS WINDS. SIGMET ERUPTION DETAILS: ASH OBSERVED AT 1355Z OBS ASH DATE/TIME: 24/1355Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL120 MOVING TO W 5-10 KNOTS. FCST ASH CLOUD +6H: 24/2000Z FCST ASH CLOUD +12H: 25/0200Z FCST ASH CLOUD +18H: 25/0800Z REMARKS: A SIGMET FROM THE GUAYAQUIL MWO INDICATES THAT THE GEOPHYSICAL INSTITUTE OBSERVED FL120 ASH. ASH CANNOT BE SEEN IN SATELLITE IMAGERY BUT IT IS POSSIBLE THAT LOW LEVEL WEATHER CLOUDS ARE HINDERING ASH DETECTION. ... NEXT ADVISORY: WILL BE ISSUED BY 20070324/2030Z