FVXX21 KWBC 250445 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0445 UTC 25 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-610 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 IN QUITO. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 0415 UTC SHOWS BROKEN MID LEVEL CLOUDS OBSCURING THE VIEW OF ANY ASH AT OR NEAR THE SUMMIT. TWO MODERATE EXPLOSIONS WERE REPORTED BY THE GEOPHYSICAL INSTITUTE EARLIER IN THE DAY ON MAY 24TH. HOWEVER ASH COULD NOT BE SEEN BY GROUND OBSERVERS BECAUSE OF THE NEARLY CONSTANT CLOUD COVER. ANY CURRENT ASH EMISSIONS ARE BELIEVED TO BE NEAR-SUMMIT BASED ON THE HEIGHT SEEN IN THE CLOUD DECKS THROUGH THE REGION. . TRAJECTORY: ANY ASH AT OR NEAR-SUMMIT LEVEL SHOULD MOVE WEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 25/1100 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. . ORRISON . NNNN