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ng4_501
An F3 Category tornado swirls across a South Dakota prairie. Tornadoes are classified according to their wind speeds, from weak F0 tornadoes with 40 to 72 mph (64 to 116 kph) winds, to ferocious F6s, with 319 to 379 mph (513 to 610 kph) winds. At F3, this
Date: 10/02/09
Views: 1532
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ng4_502
Grasses flatten as a dust-darkened F4 Category tornado roars across the South Dakota prairie. Twisters are colorless, but they usually take on the color of the dirt, debris, or dust they pick up. In some areas, red earth produces dramatic scarlet-hued tor
Date: 10/02/09
Views: 899
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ng4_001
Date: 05/29/09
Views: 1012
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ng4_002
Date: 05/29/09
Views: 822
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ng4_003
Date: 06/10/09
Views: 952
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ng4_004
Date: 06/10/09
Views: 970
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ng4_005
Date: 06/10/09
Views: 921
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ng4_006
Date: 06/10/09
Views: 758
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ng4_007
Date: 06/10/09
Views: 731
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ng4_008
Date: 06/10/09
Views: 695
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ng4_009
Date: 06/10/09
Views: 729
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ng4_010
Date: 06/10/09
Views: 779
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ng4_011
Date: 06/10/09
Views: 777
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ng4_012
Date: 06/10/09
Views: 729
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ng4_013
Date: 06/10/09
Views: 800
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ng4_014
Date: 06/10/09
Views: 747
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ng4_015
Date: 06/10/09
Views: 781
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ng4_016
Date: 06/10/09
Views: 806
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ng4_017
Date: 06/10/09
Views: 774
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ng4_018
Date: 06/10/09
Views: 736
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ng4_019
Date: 06/10/09
Views: 776
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ng4_020
Date: 06/10/09
Views: 1065
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ng4_021
Date: 06/10/09
Views: 758
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ng4_022
Date: 06/10/09
Views: 734
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ng4_023
Date: 06/10/09
Views: 752
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ng4_503
A massive F4 Category tornado closes in on a storm chaser’s van minutes after it destroyed much of Manchester, South Dakota. Tornadoes occur on every continent except Antarctica, but are most common in the mid-latitudes of the Northern and Southern hemisp
Date: 10/02/09
Views: 703
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ng4_024
Date: 06/10/09
Views: 757
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