FVXX21 KWBC 070425 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0425 UTC 07 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-535 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. 12 HOUR WINDS FORECAST FROM THE 18 UTC AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 07/0345 UTC SHOWS LAYERED CLOUDS OVER AND AROUND THE SUMMIT. THESE LAYERED CLOUDS ARE MAKING DETECTION OF ASH DIFFICULT AT THIS TIME. . TRAJECTORY: ASH FROM THE SUMMIT TO FL25O WOULD MOVE TOWARD THE WEST-SOUTHWEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 07/1030 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. . WALTER . NNNN