FVXX23 KWBC 182020 VOLCANIC ASH ADVISORY STATEMENT ISSUED 2020 UTC 18 FEB 2000 BY THE WASHINGTON VAAC . SAN CRISTOBAL 00-028 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 REPORTS... . ERUPTION DETAILS: POSSIBLE ASH VENTING... . DETAILS OF ASH CLOUD: THE AIRPORT AT CHINANDEGA LOCATED TO THE WEST OF SAN CRISTOBAL HAS REPORTED ASH AS OF 1900 UTC SUGGESTING POSSIBLE ERUPTIVE ACTIVITY. HOWEVER THE SATELLITE IMAGERY THROUGH 1945 UTC DOES NOT INDICATE ANY SIGN OF ASH. SO THEREFORE THE ASH IS BELIEVED TO BE NEAR-SUMMIT AND VERY THIN. ASH IS ESTIMATED TO BE REACHING AS HIGH AS FL060. . TRAJECTORY: ANY ASH UP TO FL060 WOULD MOVE WEST-SOUTHWEST AT 10 TO 20 KNOTS. . OUTLOOK: SEE LATEST SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 19/0230 UTC. . 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. . ORRISON . NNNN