FVXX21 KWBC 041100 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1100 UTC 04 FEB 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-142 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 MULTISPECTRAL AND INFRARED IMAGERY. 12 HOUR WIND FORECAST FROM THE 04/0000 UTC AVIATION MODEL. GEOPHYSICAL INSTITUTE IN QUITO. . ERUPTION DETAILS: INTERMITTENT ERUPTIONS. . DETAILS OF ASH: THE ASH PLUME DETECTED AT 03/1945 UTC IS NO LONGER VISIBLE ON THE SATELLITE IMAGERY. IN ADDITION CURRENT SATELLITE IMAGERY THROUGH 04/1015 UTC SHOWS EXTENSIVE CLOUDINESS OVER AND NEAR THE SUMMIT MAKING DETECTION OF ASH EXTREMELY DIFFICULT. . TRAJECTORY: ANY ASH REMAINING AT FL230 WOULD CONTINUE TO MOVE TOWARD THE WEST AT 15-20 KTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . NEXT MESSAGE WILL BE ISSUED BY 04/1700 UTC. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH ADVISORY STATEMENTS OFTEN ACCOMPANIED BY A MAP DEPICTING ASH LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS http://www.ssd.noaa.gov/VAAC/washington.html (all lower case except /VAAC/) . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . WALTER . NNNN