FVXX21 KWBC 040730 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0730 UTC 04 MAR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-269 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 04/0000 UTC AVIATION MODEL. GUAYAQUIL METEOROLOGICAL WATCH OFFICE. . ERUPTION DETAILS: OCCASIONAL EMISSION OF GASES AND ASH. . DETAILS OF ASH: NO ASH IS VISIBLE ON THE 03/0645 UTC SATELLITE IMAGE. SURFACE OBSERVATIONS FROM EARLIER IN THE DAY INDICATE ASH OVER THE SUMMIT. . TRAJECTORY: MODEL DATA INDICATES ANY ASH FROM THE SUMMIT TO FL300 WOULD MOVE WESTWARD AT 15-20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 04/1330 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. . NNNN