FVXX21 KWBC 060130 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0130 UTC 06 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-405 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: VISIBLE SATELLITE IMAGERY THROUGH 2345 UTC SHOWS EXTENSIVE CLOUDINESS OVER THE REGION MAKING ANY DETECTION OF ASH AND STEAM DIFFICULT. THE GEOPHYSICAL INSTITUTE REPORTS THAT ASH AND STEAM CONTINUES TO BE EMITTED FROM THE VOLCANO. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN THE SUMMIT LEVEL AND FL300 WOULD MOVE TOWARD THE WEST AT 15 TO 20 KTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 06/0730 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. . KARST . NNNN