FVXX21 KWBC 310130 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0130 UTC 31 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-634 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 30/1800 AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: LATEST SATELLITE IMAGERY THROUGH 31/0115 UTC DOES NOT SHOW ANY ASH ALTHOUGH THERE ARE EXTENSIVE CLOUDS IN THE AREA. ASH WAS ESTIMATED AT FL250 EARLIER TODAY. TRAJECTORY: ASH BETWEEN THE SUMMIT AND FL250 WOULD MOVE TO THE WEST AT 10 TO 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 31/0730 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. . NNNN