FVXX20 KWBC 130245 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0245 UTC 13 SEPTEMBER 1999 BY THE WASHINGTON VAAC . GUAGUA PICHINCHA 99-011 ECUADOR 0.17S 78.60W . BACKGROUND: GUAGUA PICHINCHA (1502-02) SUMMIT HEIGHT 15,695FT (4784 M) . SOURCES OF INFORMATION: INSTITUTO GEOFISICO ESCUELA POLITECNICA NACIONAL... GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. ERUPTION DETAILS: ERUPTION AT APPROXIMATELY 12/1127 UTC. . DETAILS OF ASH CLOUD: THE INSTITUTO GEOFISICO REPORTS THAT THERE HAS NOT BEEN ANY MORE MAJOR ASH PRODUCTION SINCE EARLY THIS MORNING ON THE 12TH WHEN THERE WAS A LARGE COLUMN OF STEAM AND ASH PRODUCED. THERE IS STILL SEISMIC ACTIVITY AND THE VOLCANO REMAINS RESTLESS. NO ASH CAN BE DETECTED FROM THE EARLIER ERUPTION AND THE REGION IS COVERED WITH THICK THUNDERSTORM CLOUD COVER. WE WILL CONTINUE TO MONITOR THE AREA. . TRAJECTORY: N/A . 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 www.ssd.noaa.gov/VAAC/washington.html (all lower case except /VAAC/) . OUTLOOK: SEE SIGMETS. . THIS WILL BE THE FINAL MESSAGE UNTIL ASH IS AGAIN REPORTED OR DETECTED IN IMAGERY. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN