FVXX21 KWBC 200030 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0030 UTC 20 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-589 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 19/1800 UTC AVIATION MODEL. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 19/2345 UTC SHOWS LOW AND MIDDLE LEVEL CLOUDS OVER THE AREA MAKING DETECTION OF ASH DIFFICULT. . TRAJECTORY: ASH FROM THE SUMMIT TO FL260 WOULD MOVE TOWARD THE WEST AT 10-15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 20/0630 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. . BROWN . NNNN