FVXX21 KWBC 100855 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0855 UTC 10 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-424 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY...GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: STRONG SEISMIC SIGNALS...MORE INTENSE ASH AND GAS EMISSIONS LIKELY OCCURRING. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 0815 UTC DOES NOT INDICATE ANY AREAS OF ASH. HOWEVER CLOUDS IN THE REGION ARE IMPAIRING THE ABILITY TO DETECT ASH. REPORTS FROM THE GEOPHYSICAL INSTITUTE INDICATE A STRONG POSSIBILITY OF ASH BEING EJECTED INTO THE ATMOSPHERE BASED ON STRONG SEISMIC SIGNALS EARLIER TODAY AND LAST NIGHT. THERE HAS BEEN NO ESTIMATE ON THE HEIGHT OF ANY ASH PLUME. . TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL350 IS EXPECTED TO MOVE TO THE WEST AT 10 TO 15 KNOTS. ANY ASH IN THE FL350 TO FL450 LAYER WOULD MOVE TO THE SOUTHWEST AT 15 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 10/1500 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. . NNNN