| 31. | The slow chill in Rapid City came courtesy of a blocking high pressure system over northern Canada.
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| 32. | The culprit is a high pressure system that parked itself over Florida and has refused to move.
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| 33. | A high pressure system Thursday will lead to warmer weather across southern Mozambique and eastern South Africa.
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| 34. | Despite a large high pressure system in the central Rockies, clouds will persist over the northern mountains.
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| 35. | A high pressure system to the west of Namibia will bring partly sunny weather to southwest Africa.
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| 36. | A high pressure system to the south will bring settled weather to eastern South Africa and Botswana.
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| 37. | The fact that Quito lies almost on the equator means that high pressure systems are extremely rare.
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| 38. | There is also a lack of strong high pressure systems to evaporate stubborn " dead " clouds.
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| 39. | Like a chameleon changes color to match its surroundings, high pressure systems change depending on their location.
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| 40. | Robust high pressure systems are crucial to a snowstorm because they direct cold air south from Canada.
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