FVXX21 KWBC 260500 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0500 UTC 26 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-614 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. 12 HOUR FORECAST FROM THE 18 UTC AVIATION MODEL. GEOPHYSICAL INSTITUTE . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: THE GEOPHYSICAL INSTITUTE REPORTED THAT A LARGE EXPLOSION OCCURRED AT 25/2230 UTC PRODUCING AN ASH COLUMN ESTIMATED BY GROUND OBSERVERS TO FL300. THE ASH IS MOVING FROM THE SUMMIT TO THE WEST. SATELLITE IMAGERY THROUGH 0415 UTC SHOWS LOW AND MID LEVEL CLOUDS OVER THE AREA MAKING ANY DETECTION OF ASH DIFFICULT. . TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL300 WILL MOVE WEST AT 20 TO 30 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 26/1100 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