FVXX20 KWBC 042330 VOLCANIC ASH ADVISORY . ISSUED: 2002JAN04/2330Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2002/006 . INFORMATION SOURCE: GOES-8 VISIBLE..INFRARED AND MULTISPECTRAL IMAGERY. SIGMET FROM GUAYAQUIL METEOROLOGICAL WATCH OFFICE. AVIATION MODEL WIND FORECAST. . ERUPTION DETAILS: ASH OBSERVED AT 2219Z. . DETAILS OF ASH CLOUD: INSTITUTO GEOFISICO OBSERVED ASH TO FL330 OVER THE VOLCANO AND MOVING NORTHWEST. SATELLITE IMAGERY THROUGH 2315Z SHOWS NO ASH DISCERNABLE AND NO CURRENT HOTSPOT ACTIVITY. . TRAJECTORY: ASH REPORTED MOVING NORTHWEST. UPPER AIR PATTERNS SUGGEST THE ASH WOULD BE MOVING AT 10 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . NEXT ADVISORY: NO FURTHER ADVISORIES. . NNNN