FVXX22 KWBC 240925
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 0925 UTC 24 FEB 2000 BY THE WASHINGTON VAAC
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SAN CRISTOBAL  00-044        NICARAGUA  1242N 8700W 
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BACKGROUND:    SAN CRISTOBAL NICARAGUA (1404-02)
               SUMMIT HEIGHT 5725 FT (1745M)
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SOURCES OF INFORMATION: GOES-8 MULTISPECTRAL AND
INFRARED IMAGERY...AVIATION MODEL UPPER-AIR SOUNDING DATA
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ERUPTION DETAILS: CONTINUOUS LOW LEVEL ASH AND GAS EMISSION.
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DETAILS OF ASH CLOUD: GOES-8 MULTISPECTRAL AND INFRARED
IMAGERY THROUGH 24/0845 UTC DOES NOT INDICATE ANY SIGNS OF ASH
LEAVING THE SUMMIT. HOWEVER THE VOLCANO HAS BEEN PERSISTENTLY
PRODUCING A LOW-LEVEL ASH PLUME WHICH HAS BEEN DETECTABLE IN
VISIBLE IMAGERY DURING THE DAYTIME. ANY CURRENT ASH PLUME IS
BELIEVED AGAIN TO BE LOW-LEVEL IN NATURE WITH A HEIGHT UP TO
AS HIGH AS FL080. VISIBLE IMAGES IN A FEW HOURS WILL BE ABLE
TO CONFIRM THE CURRENT LEVEL OF ACTIVITY.
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TRAJECTORY: ANY ASH FROM THE SUMMIT TO FL080 SHOULD MOVE TO
THE WEST-SOUTHWEST AT 15 TO 20 KNOTS.
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OUTLOOK:  SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 24/1545 UTC.
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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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ORRISON
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