FVXX21 KWBC 310330 VOLCANIC ASH ADVISORY ISSUED 0330 UTC 31 AUG 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1018 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: GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: NO ASH CAN BE DETECTED IN SATELLITE IMAGERY ALTHOUGH THERE ARE WEATHER CLOUDS OVER THE AREA. DURING THE DAY THE INSTITUTE REPORTED CONTINUED NEAR SUMMIT ACTIVITY TO AN ESTIMATED HEIGHT OF FL260 THAT IS MOVING WEST SOUTHWEST. . TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL260 WILL MOVE TOWARD THE WEST TO WEST SOUTHWEST AROUND 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 31/0930 UTC. . 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