FVXX20 KWBC 212144 VOLCANIC ASH ADVISORY ISSUED: 2003NOV21/2200Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/518 INFORMATION SOURCE: GOES-12 IMAGERY. GEOPHYSICAL INSTITUTE. UPPER AIR SOUNDING. ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS OBS ASH DATE/TIME: 21/2115Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/200 MOVING W 10 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS REMARKS: THE GEOPHYSICAL INSTITUTE OBSERVED ASH OVER THE VOLCANO AT 1905Z TO FL190. SATELLITE IMAGERY SHOWS EXTENSIVE CLOUD COVER IN THE VICINITY OF THE VOLCANO MAKING IT DIFFICULT TO TRACT ASH. ANY ASH TO FL190 SHOULD MOVE TOWARDS THE WEST. NEXT ADVISORY: WILL BE ISSUED BY 2003NOV22/0400Z NNNN