FVXX21 KWBC 131730 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1730 UTC 13 JAN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-051 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY... UPPER AIR DATA FROM THE GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM...POSSIBLY SOME STRONGER EXPLOSIONS... . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 13/1645 UTC REVEALED MIDLEVEL CLOUDS OVER THE SUMMIT AND SURROUNDING VICINITY. NO ASH WAS DETECTED HOWEVER THERE HAVE BEEN SOME OCCASIONAL EMISSIONS OF ASH AND STEAM OVER THE LAST 24 HOURS. ADDITIONAL EMISSIONS OF ASH AND STEAM MAY OCCUR AT ANY TIME. . TRAJECTORY: ASH AND STEAM FROM THE SUMMIT TO FL240 WOULD MOVE TO THE SOUTH-SOUTHWEST AT 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 13/2330 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . CLARK/TURK . NNNN