FVXX20 KWBC 232330
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VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 2330 UTC 23 JAN 1999 BY THE WASHINGTON VAAC
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SOUFRIERE HILLS 99-026    WEST INDIES 16.7N 62.2W  
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BACKGROUND:    SOUFRIERE HILLS MONTSERRAT (1600-05)
               SUMMIT HEIGHT 3000FT (915M)
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SOURCES OF INFORMATION: MONTSERRAT VOLCANO OBSERVATORY...GOES 8
INFRARED SATELLITE IMAGERY...1200 UTC GUADELOUPE SOUNDING
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ERUPTION DETAILS: ASH VENTING EPISODE AT 23/2151 UTC
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DETAILS OF ASH CLOUD: THE MONTSERRAT VOLCANO OBSERVATORY REPORTED THAT
AN ASH VENTING EPISODE AT 23/2151 UTC PRODUCED AN ASH CLOUD TO FL100.
THE ACTIVITY HAD RETURNED TO NORMAL BACKGROUND LEVELS BY 23/2240 UTC. 
ENHANCED INFRARED SATELLITE IMAGERY THROUGH 2245 UTC INDICATED AN ASH
PLUME EXTENDED FROM THE SUMMIT TO 16.6N 62.5W.  THE PLUME WAS 10 KM (5
NMI) WIDE AND WAS ESTIMATED BELOW FL100 BASED ON SPEED OF MOTION.     
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TRAJECTORY: TOWARD THE WEST AT 15 - 25 KNOTS.
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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/messages.html
(all lower case except /VAAC/)
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OUTLOOK:  SEE LATEST SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED AROUND 24/0530 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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NNNN"Attached Graphic Map Depicting Ash" 

"Graphic Map Depicting Ash"