FVXX20 KWBC 231945 VOLCANIC ASH ADVISORY ISSUED 1945 UTC 23 JUL 2000 BY THE WASHINGTON VAAC . GUAGUA PICHINCHA 00-180 ECUADOR 0011S 7836W . BACKGROUND: GUAGUA PICHINCHA ECUADOR (1502-02) SUMMIT HEIGHT 15695 FT (4784 M) . SOURCES OF INFORMATION: GUAYAQUIL METEOROLOGICAL WATCH OFFICE SIGMET...GEOPHYSICAL INSTITUTE REPORT...GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY . ERUPTION DETAILS: ASH EMISSION AT 23/1315 UTC. . DETAILS OF ASH CLOUD: VERY DENSE CLOUDINESS COVERS THE VOLCANO MAKING IT DIFFICULT TO DETECT THE ASH PLUME OBSERVED AT 23/1315 UTC. THE ASH PLUME FROM THAT ERUPTION WAS ESTIMATED AT FL200 MOVING TO THE WEST. . TRAJECTORY: ASH BETWEEN THE SUMMIT AND FL200 IS MOVING TO THE WEST OR NORTHWEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS . THE NEXT MESSAGE WILL BE ISSUED BY 24/0200 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. . KARST . NNNN