FVXX22 KWBC 161630
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1630 UTC 16 DEC 1999 BY THE WASHINGTON VAAC 
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SAN CRISTOBAL 99-021 NICARAGUA 12.7N 87.0W 
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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...1200 UTC AVIATION MODEL WIND FORECAST
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ERUPTION DETAILS: LIGHT VENTING OF GASES AND POSSIBLY ASH.
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DETAILS OF ASH CLOUD: NO ASH IS VISIBLE IN THE LATEST GOES-8 VISIBLE
SATELLITE IMAGERY AT 1545 UTC. 
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN FL050
AND FL100 WOULD MOVE TO THE WEST OR SOUTHWEST AT 10 TO 20 KNOTS.
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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  
www.ssd.noaa.gov/VAAC/washington.html
(all lower case except /VAAC/)
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OUTLOOK:  SEE LATEST SIGMETS.
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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
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THIS IS THE LAST STATEMENT FOR THIS EVENT.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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BROWN
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NNNN