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Maps, Figures and Diagrams of the
Red River Valley Tornado Outbreak of April 10, 1979

Surface and Upper Air Maps for
Meteorological Conditions on April 9-10, 1979

6 PM CDT,
4/9/1979
Surface 850 mb 500 mb 200 mb
6 AM CDT,
4/10/1979
Surface 850 mb 500 mb 200 mb



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