FVXX21 KWBC 301000 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1000 UTC 30 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-631 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. GUAYAQUIL METEOROLOGICAL WATCH OFFICE. 12 HOUR WIND FORECAST FROM THE 30/0000 AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 30/0915 UTC SHOWS NO ASH PLUME CURRENTLY VISIBLE DUE TO BROKEN LOW AND MIDDLE LAYER CLOUDS. AN INTERMITTENT HOT SPOT IS VISIBLE IN MULTISPECTRAL IMAGERY OVER THE PAST TWO HOURS. THE LATEST GEOPHYSICAL INSTITUTE REPORT AT 30/00058 UTC REPORTED ASH OVER THE VOLCANO. . TRAJECTORY: ANY ASH BETWEEN THE SUMMIT AND FL270 WOULD MOVE TO THE WEST AT 15 TO 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 30/1600 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