FVXX20 KWBC 121130 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1130 UTC 12 MAY 2000 BY THE WASHINGTON VAAC . GUAGUA PICHINCHA 00-165 ECUADOR 0011S 7836W . BACKGROUND: GUAGUA PICHINCHA ECUADOR (1502-02) SUMMIT HEIGHT 15695 FT (4784 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY...GEOPHYSICAL INSTITUTE REPORT...GUAYAQUIL MWO...REMARKS IN QUITO SURFACE OBSERVATION AT 12/0500 UTC . ERUPTION DETAILS: LAST ERUPTION AT 12/0420 UTC. . DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE HAD REPORTED A PROBABLE VOLCANIC ASH CLOUD OVER THE SUMMIT TO FL200 AT 11/2350 UTC. THE INSTITUTE HAS SINCE INDICATED THAT TWO ADDITIONAL ERUPTIONS HAVE OCCURRED AT 0320 UTC AND 0420 UTC WITH THE LATTER BEING DESCRIBED AS MODERATE IN SIZE. NO NEW EMISSIONS OF ASH HAVE BEEN REPORTED SINCE. NO ASH IS OBSERVED IN SATELLITE IMAGERY ALTHOUGH THERE IS EXTENSIVE CLOUDS IN THE AREA. TRAJECTORY: ANY ASH THAT MIGHT EXIST BETWEEN THE SUMMIT AND FL200 WOULD MOVE TOWARDS THE WEST AT 15 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 12/1830 UTC. . 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/) . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN