FVXX21 KWBC 011230 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1230 UTC 01 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-510 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE ... INFRARED AND MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE. SIX HOUR FORECAST FROM THE 01/0600 UTC AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 1145UTC SHOWS NO DISCERNABLE ASH PLUME. HOWEVER A HOT SPOT WAS DETECTED IN MULTISPECTRAL IMAGERY AT 1115UTC. THE FIRST TWO VISIBLE IMAGES INDICATE A POSSIBLE LOW LEVEL PLUME EXTENDING 10KM (5NMI) WEST OF THE SUMMIT TO A POINT NEAR 128S 7833W WHERE THIS POSSIBLE ASH BECOMES INTERMIXED WITH CLOUDS. . TRAJECTORY: ANY ASH BETWEEN THE SUMMIT AND FL250 WOULD MOVE TO THE WEST AT 10 TO 15 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 01/1830 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