FVXX20 KWBC 251800 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1800 UTC 25 NOV 1999 BY THE WASHINGTON VAAC . GUAGUA PICHINCHA 99-111 ECUADOR 0.17S 78.60W . BACKGROUND: GUAGUA PICHINCHA ECUADOR (1502-02) SUMMIT HEIGHT 15695 FT (4784 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE AND MULTISPECTRAL IMAGERY. . ERUPTION DETAILS: AN ERUPTION WAS REPORTED AT 25/1030 UTC. . DETAILS OF ASH CLOUD: THE ASH FROM THE EARLIER ERUPTION IS NO LONGER DETECTED IN SATELLITE IMAGERY THROUGH 1715UTC. THE PLUME THAT WAS MOVING TOWARDS THE SOUTH AND THE EAST DISSIPATED. . TRAJECTORY: N/A. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH ADVISORY STATEMENTS 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/) . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE A WATCH VAAS AT 26/1700 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . KARST . NNNN