FVXX22 KWBC 041430 CORRECTED FOR BEGINNING DATE OF ERUPTION VOLCANIC ASH ADVISORY STATEMENT ISSUED 1430 UTC 04 DEC 1999 BY THE WASHINGTON VAAC . SAN CRISTOBAL 99-013 NICARAGUA 12.7N 87.0W . BACKGROUND: SAN CRISTOBAL NICARAGUA (1404-02) SUMMIT HEIGHT 5725 FT (1745 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE..INFRARED AND MULTISPECTRAL IMAGERY. 0600 UTC AVIATION MODEL UPPER-AIR SOUNDING DATA. . ERUPTION DETAILS: ASH AND STEAM VENTING BEGINNING AROUND 03/1630 UTC. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 04/1415 UTC SHOWS THE AREA AROUND THE VOLCANO OBFUSCATED IN CLOUDS THEREFORE DETECTION OF VOLCANIC ASH IS IMPOSSIBLE. . TRAJECTORY: ANY REMAINING ASH AT SUMMIT LEVEL WOULD MOVE TOWARD THE SOUTHWEST AT 10KT. . 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 WILL BE THE LAST MESSAGE FOR THIS EVENT. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . WALTER/SAB/NOAA/NESDIS . NNNN