| 41. | On February 11, wind shear began decreasing as convection refired.
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| 42. | It was just pure wind shear, those last three weeks,
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| 43. | The most important is wind shear _ cross-cutting winds of differing speeds or directions.
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| 44. | Meanwhile, the change of wind speed with altitude, called wind shear, was abnormally large.
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| 45. | The most dangerous kind of wind shear is a microburst.
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| 46. | This normally occurs if upper-level wind shear is too strong.
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| 47. | But Hammerschmidt said the accident was consistent with wind shear.
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| 48. | However, wind shear increased shortly thereafter, and the system weakened.
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| 49. | Soon it started experiencing strong wind shear and continued weakening.
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| 50. | It was located in an area of moderate wind shear.
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