FVXX21 KWBC 131855 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1855 UTC 13 FEB 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-186 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE MULTISPECTRAL AND INFRARED IMAGERY...GUAYAQUIL METEOROLOGICAL WATCH OFFICE...6 HOUR WIND FORECAST FROM THE 13/1200 UTC AVIATION MODEL. . ERUPTION DETAILS: ALMOST CONTINUOUS ERUPTION OF ASH AND STEAM. . DETAILS OF ASH: A 1700 UTC SURFACE REPORT FROM RIOBAMBA...LOCATED APPROXIMATELY 32 KM (17 NMI) TO THE SOUTHWEST OF THE SUMMIT...REPORTED VOLCANIC ASH AT FL260. SATELLITE DATA HAS BEEN LIMITED TO ONE IMAGE EVERY THREE HOURS IN ORDER TO SUPPORT U.S. NATIONAL WEATHER SERVICE OPERATIONS. THE 1745 UTC IMAGE DID NOT SHOW ASH OVER THE VOLCANO OR TO ITS WEST. CLOUDS DOMINATED THE AREA TO THE EAST OF THE SUMMIT. . TRAJECTORY: TOWARDS THE WEST AT 20-25 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED AT 14/0100 UTC. . 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/) . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . TURK . NNNN