FVXX20 KNES 280156 VOLCANIC ASH ADVISORY ISSUED: 20070328/0156Z VAAC: WASHINGTON VOLCANO: REVENTADOR 1502-01 LOCATION: S0004 W07739 AREA: ECUADOR SUMMIT ELEVATION: 11686 FT (3562 M) ADVISORY NUMBER: 2007/020 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12. GFS WINDS. INFRASOUND DETECTION. ERUPTION DETAILS: ONGOING ASH EMISSIONS. OBS ASH DATE/TIME: 28/0115Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL165/FL230 MOVING TO W 10 KNOTS. FCST ASH CLOUD +6H: 28/0730Z FCST ASH CLOUD +12H: 28/1330Z FCST ASH CLOUD +18H: 28/1930Z REMARKS: A HOTSPOT WAS OBSERVED AT THE SUMMIT AT 27/2145 BEFORE THICK WEATHER CLOUDS MOVED OVER THE REGION AROUND 27/2315Z. THE INSTITUTE OBSERVED ASH TO FL230 MOVING WEST AT 27/2305Z BUT AN ASH CLOUD HAS NOT BEEN VISIBLE IN SATELLITE IMAGERY. INFRASOUND CONFIRMS ACTIVITY AT THE VOLCANO SINCE ABOUT THE TIME OF THE HOTSPOT DETECTION. ...BALDWIN NEXT ADVISORY: WILL BE ISSUED BY 20070328/0800Z