FVXX21 KWBC 010630 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0630 UTC 01 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-509 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 01/0000 UTC AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: NO ASH IS VISIBLE IN THE LATEST GOES-8 IMAGERY AT 0545 UTC. HOWEVER AN OCCASIONAL HOT SPOT CAN BE SEEN IN SHORTWAVE IMAGERY. THE LAST VISIBLE IMAGE OF THE DAY INDICATED A POSSIBLE NARROW PLUME EXTENDING APPROXIMATELY TO THE POINT 0124S 7902W OR ABOUT 35 NMI WEST OF THE VOLCANO. . TRAJECTORY: ANY ASH BETWEEN THE SUMMIT AND FL250 WOULD MOVE TO THE WEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 01/1230 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