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Old 07-12-2012, 05:49 PM  
ja-knee-sea
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Default Re: Weather facts and maybe some myths

With barometric pressure, just remember righty-tighty, lefty-loosey...
High pressure(warm fronts) rotates clockwise(righty) and compresses the atmosphere... Compressing a gas causes it to heat up... Warm air holds more moisture before condensing(clouds and rain) which is why it is associated with mile high blue bird skies...
Low pressure(cold fronts) revolves counter-clockwise(lefty) and pulls the atmosphere upwards... De-pressurizing a gas makes it cool(think how a can of propane gets icy cold as you use it)... Cooler air holds less moisture before condensing(clouds and rain) which is why it is associated with overcast, storms and lower temps...
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