FVXX21 KWBC 301400 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1400 UTC 30 OCTOBER 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-049 ECUADOR 1.47S 78.44W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY... NATIONAL WEATHER SERVICE NUMERICAL WEATHER MODEL DATA. . ERUPTION DETAILS: OCCASIONAL VENTING OF ASH AND STEAM. . DETAILS OF ASH: GOES-8 SATELLITE IMAGERY THROUGH 30/1315 UTC CONTINUES TO SHOW EXTENSIVE MULTILAYERED CLOUDCOVER OVER AND ADJACENT TO THE VOLCANO SITE. NO CHANNEL OF SATELLITE IMAGERY SUGGESTS ANY ASH AT THIS TIME. OVER THE LAST 12 HOURS THERE HAS BEEN SOME OCCASIONAL ACTIVITY WITH ASH AND STEAM REACHING FL210 HOWEVER NO ERUPTION APPEARS TO BE EVIDENT AT THIS TIME. CAUTION IS STRONGLY SUGGESTED THOUGH AS THE VOLCANO HAS BEEN VERY ACTIVE OVER THE LAST COUPLE OF WEEKS AND MAY ERUPT AGAIN WITH LITTLE OR NO WARNING AS THE GEOPHYSICAL INSTITUTE HAS INDICATED. . TRAJECTORY: N/A. . 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 BY 30/2000 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . ORRISON . NNNN