FVXX24 KWBC 090615 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0615 UTC 09 DEC 1999 BY THE WASHINGTON VAAC . SAN CRISTOBAL 99-016 NICARAGUA 12.7N 87.0W . BACKGROUND: SAN CRISTOBAL NICARAGUA (1404-02) SUMMIT HEIGHT 5725 FT (1745 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY...CHINANDEGA SURFACE OBSERVATION . ERUPTION DETAILS: POSSIBLE SMALL ERUPTION AT 08/2345... . DETAILS OF ASH CLOUD: NO ADDITIONAL INFORMATION HAS BEEN RECEIVED ABOUT THIS EVENT. ASH WAS NEVER OBSERVED IN SATELLITE IMAGERY. TRAJECTORY: ANY ASH BETWEEN THE SUMMIT AND FL100 SHOULD MOVE TO THE WEST-SOUTHWEST AT 10 TO 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. . 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 . THIS IS THE LAST STATEMENT ON THIS EVENT. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN