FVXX20 KWBC 230355 VOLCANIC ASH ADVISORY ISSUED: 2003NOV23/0400Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/523 INFORMATION SOURCE: GOES-12 IMAGERY. GEOPHYSICAL INSTITUTE. GFS MODEL WINDS FORECAST. ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS OBS ASH DATE/TIME: 23/0315Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL200 MOVING W 5 KNOTS. FCST ASH CLOUD+6H: SEE SIGMETS REMARKS: THE ASH SEEN EARLIER IS NO LONGER VISIBLE. HOWEVER OVER THE PAST SIX HOURS A HOTSPOT HAS BEEN OBSERVED IN THE MULTISPECTRAL IMAGERY. IN ADDITION THE GEOPHYSICAL INSTITUTE OBSERVED ASH OVER THE SUMMIT AT 22/2335Z TO FL200. WALTER . NEXT ADVISORY: WILL BE ISSUED BY 2003NOV23/1000Z NNNN