FVXX20 KWBC 121540 VOLCANIC ASH ADVISORY ISSUED 1540 UTC 12 JUL 2000 BY THE WASHINGTON VAAC . GUAGUA PICHINCHA 00-170 ECUADOR 0011S 7836W . BACKGROUND: GUAGUA PICHINCHA ECUADOR (1502-02) SUMMIT HEIGHT 15695 FT (4784 M) . SOURCES OF INFORMATION: GEOPHYSICAL INSTITUTE...GOES 8 VISIBLE...INFRARED AND MULTISPECTRAL SATELLITE IMAGERY...AVIATION MODEL WIND FORECASTS . ERUPTION DETAILS: EMISSIONS OF STEAM AND ASH AT 07/1351 UTC. . DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE REPORTED THAT GUAGUA PICHINCHA ERUPTED AROUND 1453 UTC. BASED ON SEISMICITY THE HEIGHT WAS ESTIMATED TO BE BETWEEN FL350 AND FL400. HOWEVER SATELLITE DATA THROUGH 1515 UTC DID NOT REVEAL ANY ASH CLOUD THROUGH BROKEN CLOUDS. TRAJECTORY: ANY ASH THAT MIGHT EXIST WOULD MOVE TOWARDS THE WEST OR NORTHWEST AT 10 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 12/2130 UTC OR SOONER IF ADDITIONAL INFORMATION BECOMES AVAILABLE. . 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. . TURK/FERRARO/CLARK . NNNN