FVXX21 KWBC 091030 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1030 UTC 10 JAN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-041 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. REPORTS FROM THE GEOPHYSICAL INSTITUTE...UPPER-AIR SOUNDING DATA...0000 UTC AVIATION MODEL FORECAST DATA... . ERUPTION DETAILS: INTERMITTENT ASH AND STEAM EMISSIONS... . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 10/0845 UTC DOES NOT INDICATE ANY ASH OR STEAM. IMAGERY IS LIMITED DUE TO RAPID SCAN OPERATIONS. HOWEVER THE GEOPHYSICAL INSTITUTE CONTINUES TO REPORT STRONG SEISMIC ACTIVITY AND INDICATES OCCASIONAL EMISSIONS OF ASH AND STEAM LEAVING THE SUMMIT. AN ASH PLUME WAS OBSERVED YESTERDAY IN VISIBLE IMAGERY ESTIMATED TO FL250. . TRAJECTORY: ANY ASH OR STEAM FROM THE SUMMIT TO FL250 IS FORECASTED TO MOVE TO THE NORTH-NORTHWEST AT 15 TO 20 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 BY 10/1630 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN