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Why do you need high pressure for clear skies?

Updated: 8/17/2019
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14y ago

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High pressure is not essential for clear skies. It certainly helps as high pressure brings with it a general downward movement of air and for clouds to form, a general upward motion of air is needed. However, there are other factors that affect the chance of cloud formation and hence clear skies; the amount of water vapour in the atmosphere, the temperature of the local atmosphere to name just two.

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14y ago
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Q: Why do you need high pressure for clear skies?
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