FVXX21 KWBC 071300 VOLCANIC ASH ADVISORY ISSUED 1300 UTC 07 SEP 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-1048 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED...AND MULTISPECTRAL IMAGERY. 07/1200 HOUR WIND FORECAST FROM THE 07/0600 UTC AVIATION MODEL. GEOPHYSICAL INSTITUTE IN QUITO. . ERUPTION DETAILS: OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 1215 UTC SHOWS BROKEN MID LEVEL CLOUDS PARTIALLY OBSCURING THE VIEW OF THE VOLCANO. TUNGURAHUA REMAINS ACTIVE AND COULD PRODUCE ASH EMISSION AT ANYTIME. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH AT OR NEAR SUMMIT LEVEL TO MOVE WEST SOUTHWEST AT 10 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 07/1900 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. . HUGHES/KARST . NNNN