FVXX20 KWBC 121545 VOLCANIC ASH ADVISORY ISSUED 1545 UTC 12 OCT 2000 BY THE WASHINGTON VAAC . GUAGUA PICHINCHA 00-190 ECUADOR 0011S 7836W . BACKGROUND: GUAGUA PICHINCHA ECUADOR (1502-02) SUMMIT HEIGHT 15695 FT (4784 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED...AND MULTISPECTRAL IMAGERY. AVIATION FORECAST MODEL FROM 12/0600 UTC. . ERUPTION DETAILS: EXPLOSION AT 12/1446 UTC TO NEAR SUMMIT LEVEL. . DETAILS OF ASH CLOUD: GUAYAQUIL METEOROLOGICAL WATCH OFFICE REPORTS PROBABLE VOLCANIC ASH OVER THE VOLCANO AT 12/1446 UTC. THE HEIGHT IS ESTIMATED AT NEAR SUMMIT LEVEL. SATELLITE IMAGERY THROUGH 1545 UTC DOES NOT INDICATE ANY ASH AT THIS TIME. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH AT OR NEAR SUMMIT LEVEL WILL MOVE TO THE WEST AT 15 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED AT 12/2130 UTC. . REAL TIME SATELLITE IMAGERY AND 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