FVXX20 KWBC 040840
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0840 UTC 04 JULY 1999 BY THE WASHINGTON VAAC 
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SOUFRIERE HILLS 99-166    WEST INDIES 16.72N 62.18W  
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BACKGROUND:    SOUFRIERE HILLS MONTSERRAT (1600-05)
               SUMMIT HEIGHT 3000 FT (915 M)
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SOURCES OF INFORMATION:  GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. 
0000 UTC GUADELOUPE UPPER AIR SOUNDING.  
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ERUPTION DETAILS: LATEST ERUPTION AT APPROXIMATELY 04/0100 UTC.
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DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 040802 UTC SHOWS AN
EXTREMELY DIFFUSE AREA OF ASH MOVING TOWARD THE SOUTH SOUTHWEST. 
THE ASH IS RAPIDLY BECOMING EVEN MORE DIFFUSE.  IT IS DIFFICULT TO
DISCERN ITS BOUNDARIES BUT THERE SEEMS TO BE ASH WITHIN A RADIUS OF
ABOUT 34 KM (19 NMI) OF THE POINT 14.6N 62.9W.   ASH HEIGHT IS VERY
APPROXIMATELY ESTIMATED TO BE BELOW FL250.  
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TRAJECTORY: ASH IS MOVING TO THE SOUTH SOUTHWEST AT ABOUT 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 AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 04/1440 UTC. 
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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"Attached Graphic Map Depicting Ash" 

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