FVXX22 KWBC 282130 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 2130 UTC 28 JULY 1999 BY THE WASHINGTON VAAC . FUEGO 99-033 GUATEMALA 14.47N 90.88W . BACKGROUND: FUEGO GUATEMALA (1402-09) SUMMIT HEIGHT 12345 FT (3763 M) . SOURCES OF INFORMATION: .GOES 8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY...GUATEMALA VOLCANO OBSERVATORY REPORT . ERUPTION DETAILS: SMALL ERUPTIONS OF MAINLY STEAM CONTINUE. . DETAILS OF ASH CLOUD:THE GUATEMALA VOLCANO OBSERVATORY HAS LOWERED THE CLASSIFICATION OF THE FUEGO VOLCANO TO CODE ALERT YELLOW. THE OBSERVATORY REPORTS OCCASIONAL SMALL EMISSIONS OF MAINLY STEAM. NO ASH SIGNATURES ARE VISIBLE IN SATELLITE IMAGERY THROUGH 28/2045 UTC. THE VOLCANO REMAINS RESTLESS AND HAS POTENTIAL FOR AN EXPLOSIVE ERUPTION WITH LITTLE OR NO WARNING. TRAJECTORY:WEST OF 10-20KTS . 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 SIGMETS. . THE NEXT MESSAGE WILL BE A WATCH VAAS ISSUED BY 29/1800 UTC UNLESS CONDITIONS CHANGE. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN