FVXX22 KWBC 221725
VOLCANIC ASH ADVISORY STATEMENT--CORRECTED FOR DATE
ISSUED 1725 UTC 22 DEC 1999 BY THE WASHINGTON VAAC 
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MASAYA 99-003 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 SATELLITE IMAGERY...0000 UTC
AVIATION MODEL WIND DATA...INETER MANAGUA NICARAGUA
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ERUPTION DETAILS: STEADY EMISSION OF ASH.
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DETAILS OF ASH CLOUD: SATELLITE VISIBLE IMAGERY THIS MORNING
SUGGESTED A CONTINUOUS LOW LEVEL PLUME OF ASH EMANATING FROM MASAYA
VOLCANO IN NICARAGUA.  VOLCANOLOGISTS AT INETER IN MANAGUA CONFIRMED
THAT SEISMIC ACTIVITY CONSISTENT WITH ASH EMISSIONS HAD BEEN
RECORDED.  AT 1615 UTC THE PLUME WAS WITHIN 10 KM (5 NMI) EITHER
SIDE OF A LINE FROM 11.9N/86.5W TO 11.3N/87.5W.  THE AREA FROM THE
SUMMIT TO THE COASTLINE WAS OBSCURED BY SCATTERED CUMULUS CLOUDS
PRECLUDING ASH DETECTION OVER LAND.  THE HEIGHT OF THE ASH WAS
ESTIMATED TO BE BELOW FL070.
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TRAJECTORY: 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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THE NEXT STATEMENT WILL BE ISSUED AROUND 17/0000 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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TURK/CLARK/SAB/NOAA/NESDIS
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NNNN"Attached Graphic Map Depicting Ash" 

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