FVXX20 KWBC 012230 VOLCANIC ASH ADVISORY ISSUED: 2002FEB01/2230Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M). . ADVISORY NUMBER: 2002/041 . INFORMATION SOURCE: G-8 IMAGERY. AVN MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. PILOT REPORT. . ERUPTION DETAILS: REPORTED ERUPTION AT 01/2112Z. . OBS ASH DATE/TIME: 01/2145Z . OBS ASH CLOUD: SFC/FL230 MOVING E 20 KNOTS ASH NOT IDENTIFIABLE FROM SATELLITE IMAGERY. . FCST ASH CLOUD+6H: SEE SIGMETS . REMARKS: THE GEOPHYSICAL INSTITUTE AND A PILOT REPORT INDICATE ASH OVER THE SUMMIT TO FL230 MOVING E. CURRENT SATELLITE IMAGERY SHOWS CONSIDERABLE CLOUDINESS OVER THE AREA MAKING DETECTION OF ASH DIFFICULT. . NEXT ADVISORY: WILL BE ISSUED BY 2002FEB02/0430Z. . NNNN