FVXX23 KWBC 111335
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1335 UTC 11 DEC 1999 BY THE WASHINGTON VAAC
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SOUFRIERE HILLS 99-270 WEST INDIES 16.7N 62.2W
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BACKGROUND: SOUFRIERE HILLS MONTSERRAT (1600-05)
SUMMIT HEIGHT 3000 FT (915M)
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SOURCES OF INFORMATION: GOES-8 VISIBLE AND MULTISPECTRAL SATELLITE
IMAGERY...1200 UTC SOUNDING FROM GUADELOUPE.
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ERUPTION DETAILS: ERUPTION AROUND 11/1100 UTC.
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DETAILS OF ASH CLOUD: THE LATEST GOES-8 VISIBLE SATELLITE IMAGERY AT
1302 UTC SHOWS A PLUME OF THIN LOW LEVEL ASH EXTENDING FROM
SOUFRIERE HILLS SOUTHWESTWARD TO 16.39N 62.35W. THE PLUME IS 13KM
(7NMI) WIDE WITH ASH ESTIMATED BELOW FL050.
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TRAJECTORY: MOVEMENT IS TOWARD THE SSW AT 11 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
http://www.ssd.noaa.gov/VAAC/washington.html
(all lower case except /VAAC/)
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OUTLOOK: SEE 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 AT 11/1930 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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NNNN"Attached Graphic Map Depicting Ash"
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