FVXX22 KWBC 222300
VOLCANIC ASH ADVISORY STATEMENT--CORRECTED FOR DATE
ISSUED 2300 UTC 22 DEC 1999 BY THE WASHINGTON VAAC 
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MASAYA 99-004 NICARAGUA 11.98N 86.16W
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BACKGROUND:    MASAYA NICARAGUA (1404-10)
               SUMMIT HEIGHT 2083 FT (635 M)
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SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL
SATELLITE IMAGERY...1200 UTC AVIATION MODEL WIND FORECAST
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ERUPTION DETAILS: STEADY EMISSION OF ASH.
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DETAILS OF ASH CLOUD: ASH CAN NO LONGER BE SEEN IN SATELLITE IMAGERY
THROUGH 2215 UTC.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN FL040
AND FL100 WOULD MOVE TOWARDS THE WEST SOUTHWEST AT 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 WILL BE THE LAST MESSAGE ON THIS EVENT.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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STREETT/SAB/NOAA/NESDIS
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NNNN