FVXX21 KWBC 240730 VOLCANIC ASH ADVISORY ISSUED 0130 UTC 24 JUL 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-864 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE. GUAYAQUIL MWO. UPPER AIR FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM. . DETAILS OF ASH: NO CURRENT ASH PLUME IS VISIBLE IN SATELLITE IMAGERY THROUGH 24/0645 UTC. EXTENSIVE CLOUDS NEAR AND EAST OF THE SUMMIT ARE MAKING ASH DETECTION DIFFICULT. THE LATEST REPORT OF ASH OCCURRED AT 23/2346 UTC WHEN THE GEOPHYSICAL INSTITUTE REPORTED ASH OVER THE VOLCANO. . TRAJECTORY: ANY ASH AT NEAR SUMMIT WOULD MOVE TOWARDS THE WEST AND SOUTHWEST AT 15 TO 25 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 24/1330 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. . NNNN