FVXX21 KWBC 071700 . VOLCANIC ASH ADVISORY ISSUED 1700 UTC 07 NOVEMBER 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-085 ECUADOR 1.47S 78.44W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY...GUAYAQUIL METEOROLOGICAL WATCH OFFICE SIGMETS AND THE INSTITUTO GEOFISICO. . ERUPTION DETAILS: THE INSTITUTO GEOFISICO REPORTS A NEARLY CONTINUOUS EMISSION OF STEAM AND ASH NEAR THE SUMMIT AND STRONG SEISMIC ACTIVITY. . DETAILS OF ASH: SIGMET 3 OUTLOOK FROM GUAYAQUIL REPORTS ASH BETWEEN FL200/FL300 MOVING SOUTHEAST AROUND 5 KNOTS. WE ARE UNABLE TO DETECT ANY ASH IN THE LATEST SATELLITE IMAGERY AT 1615 UTC. . TRAJECTORY: UPPER AIR WIND DATA SUGGESTS ANY ASH BETWEEN FL200 AND FL300 WOULD MOVE TOWARDS THE SOUTHEAST AT 5 TO 10 KNOTS. 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/) . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED AROUND 07/2300 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . BROWN . NNNN