FVXX20 KWBC 222100 VOLCANIC ASH ADVISORY ISSUED 2100 UTC 22 JUL 2000 BY THE WASHINGTON VAAC . GUAGUA PICHINCHA 00-175 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. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: MODERATE ASH EMISSION AT 22/2030 UTC. . DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE HAS REPORTED A MODERATE EMISSION OF ASH AT GUAGUA PICHINCHA. THERE IS SOME QUESTION AS TO THE HEIGHT OF THE ASH HOWEVER IT IS BELIEVED TO BE NEAR-SUMMIT AT THIS TIME. SATELLITE IMAGERY HAS BEEN REVEALING A RATHER EXTENSIVE AREA OF CLOUDS OVER ECUADOR ALL AFTERNOON AND THS DETECTING ASH FOR THIS EVENT WILL LIKELY BE VERY DIFFICULT. WILL CONTINUE TO MONITOR. TRAJECTORY: ANY ASH NEAR THE SUMMIT WILL MOST LIKELY MOVE TO THE NORTHWEST AT 10 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEST STATEMENT WILL BE ISSUED BY 23/0300 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. . ORRISON . NNNN