FVXX21 KWBC 010030 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0030 UTC 01 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-508 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. FORECAST FROM THE 30/1200 UTC AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: NO ASH IS VISIBLE IN THE LATEST GOES-8 IMAGERY AT 2345 UTC. HOWEVER AN OCCASIONAL HOT SPOT CAN BE SEEN IN THE THE MULTISPECTRAL IMAGERY INDICATING A POSSIBLE INCREASE IN ACTIVITY AT THE VOLCANO. GOES-8 IS CURRENTLY IN RAPID SCAN WHICH ONLY PROVIDES IMAGES OVER THE VOLCANO EVERY THREE HOURS. . TRAJECTORY: ANY ASH BETWEEN THE SUMMIT AND FL250 WOULD MOVE TO THE WEST AT 10 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 01/0630 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. . BROWN . NNNN