FVXX21 KWBC 201530 VOLCANIC ASH ADVISORY ISSUED 1530 UTC 20 AUG 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-975 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE... INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: WEATHER CLOUDS ARE OBSCURING THE VOLCANO FROM THE GROUND AND IN SATELLITE IMAGERY THROUGH 1445 UTC. SEISMIC ACTIVITY HAS BEEN MINIMAL INDICATING ONLY NEAR SUMMIT EMISSIONS OF GAS AND POSSIBLE LIGHT ASH. . TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL240 WILL MOVE TOWARD THE WEST TO WEST-SOUTHWEST AROUND 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 20/2130 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