FVXX20 KWBC 252000 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 2000 UTC 25 NOV 1999 BY THE WASHINGTON VAAC . GUAGUA PICHINCHA 99-112 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 REPORT FROM THE INSTITUTO GEOFISICO AND SURFACE OBSERVATIONS FROM QUITO. . 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 1915UTC. THE PLUME THAT WAS MOVING TOWARDS THE SOUTH AND THE EAST HAS DISSIPATED. THE SURFACE OBSERVATIONS OUT OF QUITO ARE REPORTING ASH AS A RESTRICTION TO VISIBILITY HOWEVER IT IS NOT CURRENTLY FALLING BUT IS BEING BLOWN ABOUT AT THE SURFACE BY THE WIND. THE INSTITUTO REPORTS THAT THE VOLCANO IS VENTING GASES BUT NO ASH AT THIS TIME. . TRAJECTORY: ANY ASH BELOW FL250 WILL MOVE TO THE EAST AROUND 10 KNOTS. . 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. . THIS WILL BE THE LAST STATEMENT ON THIS ERUPTION. WE WILL CONTINUE TO MONITOR THE AREA AND WILL GO BACK INTO A WATCH VAAS AT 26/1700 UTC UNLESS CONDITIONS CHANGE. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN