FVXX21 KWBC 111730
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VOLCANIC ASH ADVISORY
ISSUED 1730 UTC 11 NOV 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-105    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 INFRARED VISIBLE AND MULTISPECTRAL
IMAGERY...GUAYAQUIL METEOROLOGICAL WATCH OFFICE SIGMETS....
GEOPHYSICAL INSTITUTE IN QUITO and U.S. NUMERICAL MODEL UPPER AIR
WIND FORECAST DATA.
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ERUPTION DETAILS: CONTINUOUS VENTING OF ASH AND STEAM NOW AT LOWER
LEVELS.
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DETAILS OF ASH: ASH WAS NOT DETECTED ON SATELLITE IMAGERY THROUGH
11/1645 UTC.
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TRAJECTORY: UPPER AIR DATA AND MODEL OUTPUT DATA SUGGEST ANY
REMAINING ASH AT FL250 WOULD MOVE TOWARD THE SOUTH-SOUTHEAST
AT 5-10 KT.
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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 11/2330.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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WALTER/SAB/NOAA/NESDIS
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