FVXX23 KWBC 200100 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0100 UTC 20 FEB 2000 BY THE WASHINGTON VAAC . SAN CRISTOBAL 00-031 NICARAGUA 1242N 8700W . BACKGROUND: SAN CRISTOBAL NICARAGUA (1404-02) SUMMIT HEIGHT 5725 FT (1745 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. CHINANDEGA SURFACE OBSERVATIONS. 6 HOUR WINDS FORECAST FROM THE AVIATION MODEL. . ERUPTION DETAILS: EMISSION OF ASH AND GASES BEGINNING TIME UNKNOWN. . DETAILS OF ASH CLOUD: THE CHINANDEGA SURFACE OBSERVATION AT 19/1700 UTC REPORTED VOLCANIC ASH BUT MORE RECENT OBSERVATIONS AT 1800 2200 AND 2300 UTC DO NOT MENTION ASH. NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 20/0015 UTC. THE ASH REPORTED AT 19/1700 UTC WAS ASSUMED TO BE LOW LEVEL ACTIVITY PROBABLY BELOW FL060. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH AT OR BELOW FL060 WILL MOVE WEST OR WEST SOUTHWEST AT 10 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS. . THIS WILL BE THE LAST MESSGE ON THIS EVENT. . 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 http://www.ssd.noaa.gov/VAAC/washington.html (all lower case except /VAAC/) . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN