FVXX20 KWBC 251100 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1100 UTC 25 NOV 1999 BY THE WASHINGTON VAAC . GUAGUA PICHINCHA 99-109 ECUADOR 0.17S 78.60W . BACKGROUND: GUAGUA PICHINCHA ECUADOR (1502-02) SUMMIT HEIGHT 15695 FT (4784 M) . SOURCES OF INFORMATION: GEOPHYSICAL INSTITUTE IN QUITO...GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. . ERUPTION DETAILS: AN ERUPTION WAS REPORTED AT 25/1030 UTC. . DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE HAS JUST REPORTED ANOTHER MODERATE EXPLOSION OF GUAGUA PICHINCHA AT 1030 UTC...SIMILAR TO YESTERDAYS EVENT. SATELLITE IMAGERY IS NOT YET AVAILABLE TO ANALYSE. . 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 ISSUED WITHIN AN HOUR. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . TURK . NNNN