FVXX21 KWBC 241500 VOLCANIC ASH ADVISORY ISSUED 1500 UTC 24 AUG 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-0991 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: GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 24/1415 UTC SHOWS EXTENSIVE CLOUDS OVER THE AREA MAKING IT DIFFICULT TO DETECT ANY ASH. THE MOST RECENT OBSERVATION OF ASH WAS REPORTED OVER THE VOLCANO AT 23/2200 UTC MOVING WEST. . TRAJECTORY: ANY ASH THAT MIGHT EXIST NEAR SUMMIT LEVEL WOULD MOVE TOWARDS THE WEST AT BETWEEN 15 AND 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT ADVISORY WILL BE ISSUED BY 24/2100 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