FVXX21 KWBC 202200 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 2200 UTC 20 JULY 1999 BY THE WASHINGTON VAAC . FUEGO 99-023 GUATEMALA 14.47N 90.88W . BACKGROUND: FUEGO GUATEMALA (1402-09) SUMMIT HEIGHT 12345 FT (3763 M) . SOURCES OF INFORMATION: GUATEMALA VOLCANO OBSERVATORY...GOES 8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY... U.S. NATIONAL WEATHER SERVICE NUMERICAL WEATHER MODELS. . ERUPTION DETAILS: SMALL EMISSIONS OF ASH. . DETAILS OF ASH CLOUD: THE GUATEMALA VOLCANO OBSERVATORY CONTINUES TO CLASSIFY THE FUEGO VOLCANO AS A CODE ALERT ORANGE. NO ASH IS VISIBLE ON SATELLITE IMAGERY THROUGH 2045 UTC. . TRAJECTORY: NUMERICAL MODEL DATA SUGGESTS THAT ANY ASH AT ABOUT FL150 WOULD MOVE TO THE WEST OR WEST SOUTHWEST BETWEEN 10-20 KNOTS. . 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 www.ssd.noaa.gov/VAAC/washington.html (all lower case except /VAAC/) . OUTLOOK: SEE LATEST SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED EITHER BY 21/0400 UTC OR AS SOON AS THE ALERT STATUS OF FUEGO IS CHANGED. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN