FVXX22 KWBC 232140 VOLCANIC ASH ADVISORY STATEMENT ISSUED 2140 UTC 23 NOV 1999 BY THE WASHINGTON VAAC . SAN CRISTOBAL 99-005 NICARAGUA 12.7N 87.0W . BACKGROUND: SAN CRISTOBAL NICARAGUA (1404-02) SUMMIT HEIGHT 5725 FT (1745 M) . SOURCES OF INFORMATION: GOES-8 INFRARED..VISIBLE..AND MULTISPECTRAL IMAGERY. INETER VOLCANOLOGISTS ON SITE. 1200 UTC AVIATION MODEL DATA. . ERUPTION DETAILS: INETER VOLCANOLOGISTS REPORTED THE SAN CRISTOBAL VOLCANO WAS EMITTING ASH AT NEAR SUMMIT LEVEL AROUND 1500 UTC. . DETAILS OF ASH CLOUD: ASH IS NOT DISCERNABLE IN GOES-8 SATELLITE IMAGERY. ONLY SCATTERED CLOUDS ARE SEEN IN THE IMAGERY INDICATING THAT ANY FURTHER ASH EMISSIONS WOULD BE VERY NEAR THE SUMMIT. . TRAJECTORY: 1200 UTC AVIATION MODEL DATA INDICATE THAT WINDS BELOW FL100 ARE LIGHT AND VARIABLE WITH THE AREA NEAR A LOW AND MID LEVEL ANTICYCLONE. . 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. . THIS WILL BE THE LAST MESSAGE FOR THIS EVENT. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . RUMINSKI . NNNN