FVXX21 KWBC 261300 VOLCANIC ASH ADVISORY ISSUED 1300 UTC 26 JUL 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-873 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED...AND MULTISPECTRAL IMAGERY. THE GEOPHYSICAL INSTITUTE IN QUITO. . ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 1245 UTC DOES NOT INDICATE THE PRESENCE OF ASH. THE INSTITUTE REPORTS THAT A VERY SMALL ASH COLUMN WAS SEEN EARLIER THIS MORNING RISING TO 300 M ABOVE THE VOLCANO TO FL170. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH UP TO FL200 WOULD MOVE WEST AT 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 26/1900 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. . HUGHES . NNNN