FVXX20 KWBC 241400 VOLCANIC ASH ADVISORY ISSUED 1400 UTC 24 JUL 2000 BY THE WASHINGTON VAAC . GUAGUA PICHINCHA 00-183 ECUADOR 0011S 7836W . BACKGROUND: GUAGUA PICHINCHA ECUADOR (1502-02) SUMMIT HEIGHT 15695 FT (4784 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED...AND MULTISPECTRAL IMAGERY. 24/1200 UTC FORECAST UPPER WINDS FROM THE 24/0000 UTC AVIATION MODEL. THE GEOPHYSICAL INSTITUTE IN QUITO. . ERUPTION DETAILS: OVERNIGHT ACTIVITY CONFINED TO THE CALDERA. . DETAILS OF ASH CLOUD: GOES-8 IMAGERY THROUGH 1315 UTC SHOWS SLIGHT FAINT ASH AT THE LOCATION OF THE VOLCANO. THE GEOPHYSICAL INSTITUTE REPORTED THAT ASH HAS BEEN CONFINED TO THE CALDERA AT SUMMIT LEVEL AND THAT THERE WERE SIX SMALL ASH EMISSIONS OVERNIGHT. GOES SHORTWAVE AND REFLECTIVITY IMAGERY DO INDICATE THE PRESENCE OF A HOT SPOT AT THE VOLCANO LOCATION...INDICATING INCREASED ACTIVITY. NO ASH IS PRESENTLY SEEN MOVING AWAY FROM THE VOLCANO. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH THAT MIGHT ESCAPE THE CALDERA AT SUMMIT LEVEL (FL157) TO MOVE WEST AT 5 TO 10 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 24/2000 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