FVXX21 KWBC 101330 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1330 UTC 10 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-550 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 10/0600 UTC AVN MODEL. GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: OCCASIONAL STEAM AND ASH EMISSIONS. . DETAILS OF ASH: VISIBLE SATELLITE IMAGERY THROUGH 1245 UTC SHOWS DENSE CLOUDS COVERING THE VOLCANO AND SURROUNDING AREA MAKING ASH DETECTION DIFFICULT. HOWEVER THE GEOPHYSICAL INSTITUTE REPORTED MODERATE EXPLOSIONS OVERNIGHT WITH A LARGER EXPLOSION OCCURRING AROUND 1000 UTC. ASH RELEASED DURING THE EXPLOSION WAS ESTIMATED AT FL230 BY THE INSTITUTE. . TRAJECTORY: ANY ASH THAT MAY EXIST FROM THE SUMMIT TO FL230 WOULD MOVE TOWARDS THE WEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 10/1930 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. . CLARK . NNNN