FVXX21 KWBC 110100 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0100 UTC 11 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-552 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY...1800 UTC NATIONAL WEATHER SERVICE MODEL FORECAST DATA. . ERUPTION DETAILS: OCCASIONAL STEAM AND ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 0015 UTC SHOWS EXTENSIVE CLOUDINESS OVER AND ADJACENT TO THE SUMMIT WITH NO CURRENT EVIDENCE OF ASH. HOWEVER THERE WAS ASH REPORTED BY THE GEOPHYSICAL INSTITUTE TO BE OVER THE VOLCANO ABOUT SIX HOURS AGO AND WAS REACHING FL250. . TRAJECTORY: ASH FROM THE SUMMIT TO FL250 IS EXPECTED TO MOVE TO THE WEST AT 20 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 11/0700 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