FVXX21 KWBC 112130 VOLCANIC ASH ADVISORY STATEMENT ISSUED 2130 UTC 11 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-430 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY... AVIATION MODEL WINDS ALOFT FORECAST MODEL. . ERUPTION DETAILS: ASH AND STEAM EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 2015 UTC SHOWS MOSTLY CLOUDY CONDITIONS AROUND THE VOLCANO. THE CLOUD COVER MAKES DETECTION OF ANY POSSIBLE ASH DIFFICULT. THE PREVIOUSLY REPORTED ASH PLUME WAS ESTIMATED TO BE BELOW FL250 EXTENDING NORTHWEST FROM THE SUMMIT AROUND 55 KM AND ROUGHLY 10 KM WIDE AND IS LIKELY TO BE AROUND BUT HIDDEN BY THE CLOUDS. THERE HAVE BEEN NO REPORTS OF ANY STRONGER ACTIVITY. . TRAJECTORY: ASH BETWEEN FL200 AND FL250 IS MOVING TOWARD THE NORTHWEST AT ABOUT 20 KNOTS. OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 12/0300 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