FVXX21 KWBC 311750 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1750 UTC 31 JAN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-126 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: JANUARY 30 GEOPHYSICAL INSTITUTE REPORT...GOES-8 VISIBLE...INFRARED AND MULTISPECTRAL SATELLITE IMAGERY... . ERUPTION DETAILS: INTERMITTENT EXPLOSIONS PRODUCING STEAM AND ASH. . DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 31/1445 UTC. EXTENSIVE CLOUDINESS FROM SHOWERS AND THUNDERSTORMS ARE NOTED IN THE AREA. THE LAST REPORT OF ASH CAME THROUGH THE GEOPHYSICAL INSTITUTE REPORT FROM JANUARY 30TH. ANY ASH AND STEAM EMISSIONS FOR THE TIME BEING ARE EXPECTED TO BE NEAR-SUMMIT TO PERHAPS AS HIGH AS FL200. THESE EMISSIONS WOULD LIKELY BE EMBEDDED IN THE MULTILAYERED CLOUD DECKS CURRENTLY OBSERVED. . NOTE THAT A GOES-8 RSO IS CURRENTLY IN EFFECT UNTIL 31/2026 UTC. THIS MEANS THERE WILL BE LIMITED SATELLITE IMAGERY AVAILABLE FOR ANALYSIS. . TRAJECTORY: ANY ASH AND STEAM FROM THE SUMMIT TO FL200 IS EXPECTED TO MOVE TO THE WEST AT 10 TO 20 KNOTS.. . OUTLOOK: SEE SIGMETS . THE NEXT STATEMENT WILL BE ISSUED BY 01/0000 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. . ORRISON . NNNN