FVXX21 KWBC 052000 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 2000 UTC 05 DEC 1999 BY THE WASHINGTON VAAC . TUNGURAHUA 99-209 ECUADOR 1.47S 78.44W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE.. MULTISPECTRAL AND INFRARED IMAGERY. UPPER AIR DATA FROM THE GEOPHYSICAL INSTITUTE. U.S. NATIONAL WEATHER SERVICE MODEL DATA. . ERUPTION DETAILS: NEW BRIEF EMISSION OF ASH WAS NOTED IN IMAGERY AT 05/1345 UTC. . DETAILS OF ASH: ASH SEEN EARLIER THIS MORNING IS NO LONGER VISIBLE. IN ADDITION THE LATEST SATELLITE IMAGERY THROUGH 05/1915 UTC SHOWS THE AREA AROUND THE VOLCANO COVERED IN SCATTERED CLOUDINESS MAKING DETECTION OF VOLCANIC ASH DIFFICULT. TRAJECTORY: ANY REMAINING ASH AT FL350 WOULD MOVE TOWARD THE SOUTH-SOUTHWEST AT 20KT. . 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/) . OUTLOOK: SEE SIGMETS. . EFFECTIVE JANUARY 3 2000 AT 0000 UTC... ALL REFERENCES TO LATITUDE AND LONGITUDE IN VOLCANIC ASH ADVISORY STATEMENTS WILL BE IN DEGREES AND MINUTES OF A DEGREE. EXAMPLE: 16.70N 62.20W WILL BE 1642N6212W . THE NEXT STATEMENT WILL BE ISSUED BY 06/0200 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . WALTER/SAB/NOAA/NESDIS . NNNN