FVXX21 KWBC 120100 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0100 UTC 12 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-556 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY...WINDS FORECAST FROM THE 1200 UTC AVN MODEL. . ERUPTION DETAILS: OCCASIONAL STEAM AND ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY AS OF 0015 UTC DOES NOT SUGGEST ANY EVIDENCE OF ASH. HOWEVER THE GEOPHYSICAL INSTITUTE REPORTED THAT THERE WAS LIKELY ASH OVER THE VOLCANO AT 1950 UTC. ALSO THERE WERE TWO SURFACE REPORTS INVOLVING RIOBABMBA AND AMBATO THAT INDICATED ASH OVER THE VOLCANO AT 2000 UTC. THE ASH WAS REPORTED TO BE REACHING FL260. NONE OF THIS ASH IS CURRENTLY EVIDENT IN SATELLITE IMAGERY. . TRAJECTORY: ANY ASH THAT MAY EXIST FROM THE SUMMIT TO FL260 WOULD MOVE TOWARDS THE WEST AT 20 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 12/0700 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. . ORRISON . NNNN