FVXX21 KWBC 270630 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0630 UTC 27 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-493 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. UPPER WINDS FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: THE LATEST REPORT OF ASH WAS A SURFACE OBSERVATION FROM CHIMBORAZO AT 26/2200 UTC REPORTING VOLCANIC ASH OVER THE VOLCANO TO FL170 MOVING WESTWARD. SATELLITE IMAGERY THRU 0545 UTC SHOWS NO ASH ALTHOUGH EXTENSIVE CLOUDS ARE PRESENT. . . TRAJECTORY: ANY ASH OR STEAM TO FL170 WOULD MOVE TOWARDS THE WEST AT 10-15 KTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 27/1230 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