FVXX23 KWBC 200100
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0100 UTC 20 FEB 2000 BY THE WASHINGTON VAAC
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SAN CRISTOBAL 00-031   NICARAGUA  1242N 8700W 
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BACKGROUND:      SAN CRISTOBAL  NICARAGUA  (1404-02)
                 SUMMIT HEIGHT 5725 FT  (1745 M)
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SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL
IMAGERY. CHINANDEGA SURFACE OBSERVATIONS. 6 HOUR WINDS FORECAST FROM
THE AVIATION MODEL. 
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ERUPTION DETAILS: EMISSION OF ASH AND GASES BEGINNING TIME UNKNOWN.
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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. 
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH AT OR BELOW
FL060 WILL MOVE WEST OR WEST SOUTHWEST AT 10 TO 25 KNOTS.
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OUTLOOK:  SEE SIGMETS.
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THIS WILL BE THE LAST MESSGE ON THIS EVENT.
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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/)
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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