FVXX22 KWBC 222000
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 2000 UTC 22 FEB 2000 BY THE WASHINGTON VAAC
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SAN CRISTOBAL  00-038        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 VISIBLE AND MULTISPECTRAL IMAGERY.
22/0000 UTC AVIATION MODEL WINDS VALID 22/1800 UTC. SURFACE METAR
FROM CHINANDEGA NICARAGUA.
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ERUPTION DETAILS: CONTINUOUS LOW LEVEL ASH AND GAS EMISSION.
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DETAILS OF ASH CLOUD: GOES-8 VISIBLE IMAGERY THROUGH 1945 UTC SHOWS
THE PLUME EXTENDING SOUTHWEST (HEADING OF 240 DEGREES) FROM SAN
CRISTOBAL INTO THE EAST PACIFIC. THE PLUME IS 108 KM (58 NMI) LONG
FROM POINT 1242N 8700W (SUMMIT) TO POINT 1215N 8752W. THE PLUME IS
24 KM (13 NMI) WIDE AND ESTIMATED TO BE AT FL070. THE ASH IS FAIRLY
DIFFUSE YET THE POINT SOURCE OF THE PLUME DOES SHOW UP IN SPLIT
WINDOW MULTISPECTRAL IMAGERY THUS CONFIRMING THE PRESENCE OF ASH IN
THE CLOUD. NICARAGUA SURFACE STATION AT CHINANDEGA CONTINUES TO
REPORT VOLCANIC ASH THROUGH 1800 UTC.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH AT OR BELOW FL100 TO
MOVE SOUTHWEST AT 10 TO 15 KNOTS.
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OUTLOOK:  SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 23/0200 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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HUGHES-NOAA/NESDIS/SAB
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NNNN"Attached Graphic Map Depicting Ash" 

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