FVXX21 KWBC 242240 VOLCANIC ASH ADVISORY STATEMENT ISSUED 2240 UTC 24 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-609 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 IN QUITO. 12 HOUR UPPER WINDS FORECAST FROM THE 24/1200 UTC AVIATION MODEL. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND ASH EMISSIONS. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 2215 UTC SHOWS BROKEN LOW AND MID LEVEL CLOUDS OBSCURING THE VIEW OF ANY ASH AT OR NEAR THE SUMMIT. TWO MODERATE EXPLOSIONS WERE REPORTED BY THE GEOPHYSICAL INSTITUTE EARLIER TODAY. HOWEVER ASH COULD NOT BE SEEN BY GROUND OBSERVERS BECAUSE OF THE NEARLY CONSTANT CLOUD COVER. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH AT OR NEAR SUMMIT LEVEL TO MOVE WEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 25/0500 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. . CLARK . NNNN