FVXX21 KWBC 031800 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1800 UTC 03 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-520 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...GUAYAQUIL METEOROLOGICAL WATCH OFFICE SIGMET...12 UTC AVIATION WINDS FORECAST . ERUPTION DETAILS: CONTINUOUS GAS AND ASH EMISSIONS. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 1715 UTC SHOWS MID LEVEL CLOUDS OVER THE VOLCANO MAKING ASH DETECTION DIFFICULT. A POSSIBLE NARROW ASH PLUME IS SEEN EXTENDING FROM THE SUMMIT TOWARD THE SOUTHWEST BUT IT IS NOT CERTAIN THAT THIS IS ASH. THE GEOPHYSICAL INSTITUTE REPORTED VOLCANIC ASH OVER THE VOLCANO AT 03/0104 UTC. . TRAJECTORY: IF THERE IS ANY ASH FROM THE SUMMIT TO FL300 IT WOULD MOVE TOWARDS THE SOUTHWEST AT ABOUT 20 KTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 04/0000 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. . KARST . NNNN