FVXX21 KWBC 122200
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VOLCANIC ASH ADVISORY
ISSUED 2200 UTC 12 NOV 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-110         ECUADOR 1.47S 78.44W 
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BACKGROUND:    TUNGURAHUA ECUADOR (1502-08)
               SUMMIT HEIGHT 16480 FT (5023 M)
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SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED...AND
MULTISPECTRAL IMAGERY...U.S. NUMERICAL MODEL WINDS.
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ERUPTION DETAILS: EXPLOSION AROUND 12/1500 UTC.
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DETAILS OF ASH: ASH FROM THE 1500 UTC EXPLOSION CAN NOT BE SEEN ON
SATELLITE IMAGERY THROUGH 2115 UTC. ONLY VERY FAINT ASH CAN BE SEEN
IN MULTISPECTRAL IMAGERY AROUND AN TO THE SOUTH OF THE SUMMIT. THIS
FAINT ASH IS ESTIMATED TO BE AT OR BELOW FL200. TUNGURAHUA REMAINS
IN A VERY UNSTABLE STATE AND FURTHER EXPLOSIVE ERUPTIONS ARE LIKELY.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH AT OR BELOW FL200 TO
MOVE WEST AT 10 TO 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  
http://www.ssd.noaa.gov/VAAC/washington.html
(all lower case except /VAAC/)
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OUTLOOK:  SEE SIGMETS AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 13/0400.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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HUGHES - NOAA/NESDIS/SAB
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