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Unformatted text preview: the Rockies and in the plains to the east of the Rockies Two types of patterns can produce the easterly winds needed for upslope storms The first pressure pattern occurs when a high pressure system is located to the north of the state. Winds circulate clockwise around a high-pressure center, so that south of the high, the winds are easterly. The second pressure pattern occurs when there is a low pressure center south of the state known as a four corner low because it touches the corners of those four states. This low pulls wind up northwest from the Gulf of Mexico and this air is usually warm and moisture laden and leads usually to heavy snows with higher water equivalent....
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- Fall '06