FVXX21 KWBC 101515 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1515 UTC 10 OCTOBER 1999 BY THE WASHINGTON VAAC . SANTA MARIA 99-005 GUATEMALA 14.72N 91.65W . BACKGROUND: SANTA MARIA GUATEMALA (1402-03) SUMMIT HEIGHT 12375 FT (3763 M) . SOURCES OF INFORMATION: METAR REPORT FROM MGRT (RETALHULEU)...GOES 8 INFRARED AND VISIBLE IMAGERY...AVN NUMERICAL WEATHER MODEL DATA . ERUPTION DETAILS: FIRST SURFACE REPORT AT 10/1200 UTC. . DETAILS OF ASH CLOUD:GOES 8 SATELLITE IMAGERY DOES NOT DEPICT ANY ASH CLOUD AT THIS TIME..ALTHOUGH THERE IS CONSIDERABLE MID AND HIGH LEVEL CLOUDINESS OVER THE VOLCANO. THE FIRST SURFACE REPORT FOR THE DAY (1200 UTC) FROM STATION MGRT INDICATED THE VOLCANO WAS IN ERUPTION AND HAS CONTINUED TO INCLUDE THAT IN THE REMARKS THROUGH 1400 UTC. IT IS ASSUMED THAT ANY ASH FROM THIS ERUPTION WOULD BE NEAR THE SUMMIT. . TRAJECTORY: WINDS NEAR THE SUMMIT (12375 FT) ARE FROM THE EAST TO NORTHEAST AT 15 KT OR LESS. . 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 SIGMET. . THE NEXT STATEMENT WILL BE ISSUED BY 10/2100 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN