FVXX21 KWBC 031930 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1930 UTC 03 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-650 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE AND INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 03/1845 UTC SHOWS EXTENSIVE LOW AND MID LEVEL CLOUDINESS IN THE VICINITY OF THE VOLCANO. THE VOLCANO REMAINS UNSTABLE AND MAY EMIT ASH AND STEAM AT ANY TIME TO NEAR SUMMIT LEVEL OF FL180. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN THE SUMMIT AND FL180 WOULD MOVE TOWARD THE WEST SOUTHWEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 04/0130 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. . KARST . NNNN