FVXX21 KWBC 040100 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0100 UTC 04 MAR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-268 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. 6 HOUR WIND FORECAST FROM THE 03/1800 UTC AVIATION MODEL. GUAYAQUIL METEOROLOGICAL WATCH OFFICE GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: OCCASIONAL EMISSION OF GASES AND ASH. . DETAILS OF ASH: NO ASH IS VISIBLE ON THE 03/2345 UTC SATELLITE IMAGE. A SURFACE OBSERVATION FROM RIOBAMBA (SERB 0138S 7840W) AT 03/2200 UTC INDICATED VOLCANIC ASH OVER THE SUMMIT. . TRAJECTORY: ASH FROM THE SUMMIT TO FL300 WOULD MOVE WESTWARD AT 15-20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 04/0730 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