FVXX21 KWBC 010030 VOLCANIC ASH ADVISORY ISSUED 0030 UTC 01 JUL 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-766 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. WINDS FORECAST FROM THE AVIATION MODEL. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: THE GEOPHYSICAL INSTITUTE REPORTED AN EXPLOSION AT 30/2336 UTC PRODUCING ASH TO FL260. THE ASH IS REPORTED TO BE MOVING WEST FROM THE SUMMIT. SATELLITE IMAGERY THROUGH 01/0015 UTC DOES NOT SHOW ANY DEFINITIVE AREAS OF ASH ALTHOUGH CLOUDS IN THE AREA COULD BE OBSCURING THE ASH. . TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL260 WOULD MOVE TOWARDS THE WEST AND NORTHWEST AT 15 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 01/0700 UTC. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH ADVISORIES 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