FVXX21 KWBC 220600 VOLCANIC ASH ADVISORY ISSUED 0600 UTC 22 JUL 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-855 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. GUAYAQUIL MWO. . ERUPTION DETAILS: EXPLOSION WITH HEAVY ASH EMISSION AROUND 21/2220 UTC. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 22/0515 UTC SHOWS NO CURRENT ASH PLUME. SCATTERED CLOUDS AROUND THE SUMMIT MAY BE OBSCURING ANY ASH PLUME. THE MOST RECENT OBSERVATION OF ASH OVER THE VOLCANO OCCUREED AT 21/2236 UTC AS REPORTED BY THE GEOPHYSICAL INSTITUTE. . TRAJECTORY: ASH FROM THE SUMMIT TO FL250 SHOULD MOVE TO THE NORTHWEST AT 5 TO 10 KNOTS WITH ASH FROM FL250 TO FL350 BECOMING MORE WESTERLY AT 10 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 22/1200 UTC. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH ADVISORIES 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