FVXX21 KWBC 041700 VOLCANIC ASH ADVISORY ISSUED 1700 UTC 04 OCT 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1122 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE REPORT. 12 HOUR FORECAST FROM THE 04/0600 UTC AVIATION MODEL. . ERUPTION DETAILS: MINOR ERUPTION AT 04/0830 UTC TO FL250. . DETAILS OF ASH: THE GEOPHYSICAL INSTITUTE REPORTED THAT THIS MORNINGS ERUPTION WAS A MINOR ERUPTION AND THE VOLCANO HAS BEEN QUIET SINCE. ASH WAS NOT OBSERVED IN SATELLITE IMAGERY ALTHOUGH THERE HAS BEEN EXTENSIVE CLOUDS IN THE AREA. TRAJECTORY: ANY REMAINING ASH AT FL250 WILL MOVE TOWARDS THE SOUTHWEST AT 5 KNOTS. . OUTLOOK: SEE SIGMETS. . THIS IS THE LAST ADVISORY UNTIL ASH IS AGAIN REPORTED OR OBSERVED IN SATELLITE IMAGERY. . REAL TIME SATELLITE IMAGERY AND 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. . NNNN