Upper Low Keeping Us Cool, Upper High Will Bring Heat Back - WKRN News 2

Upper Low Keeping Us Cool, Upper High Will Bring Heat Back

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When it comes to diagnosing the upper air pattern (jet stream), the rule of thumb is:

1)  Upper level lows and low pressure troughs bring cold air.

2) Upper level highs and high pressure ridges bring warm air.

At the end of last week, a strong trough (for August) brought in a cold front at the surface.  This upper trough became a "cut off" low as the cool temperatures continued.

Later this week, that will be replaced by a strong ridge of high pressure that will bring 90 degree temperatures back to the mid state.

August will return!

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