FVXX20 KWBC 180115
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0115 UTC 18 JULY 1999 BY THE WASHINGTON VAAC 
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COLIMA 99-040  MEXICO 19.51N 103.62W 
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BACKGROUND:    COLIMA MEXICO (1401-04)
               SUMMIT HEIGHT 13451 FT (4100 M)
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SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL
IMAGERY...1200 UTC  MANZANILLO RADIOSONDE

ERUPTION DETAILS:  ERUPTION OCCURRED AT ABOUT 17/1742 UTC. 
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DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 0045 UTC SHOWS THE
DEVELOPMENT OF STRONG THUNDERSTORMS IN THE VICINITY OF THE VOLCANO. 
THESE THUNDERSTORMS AND THE ASSOCIATED CIRRUS CLOUDS ARE OBSCURING ANY
DETECTION OF ASH.
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TRAJECTORY: WEST AT LESS THAN 10 KNOTS.  SOME ASH IS MOVING TO THE
NORTHWEST AT LESS THAN 15 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 18/0715 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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