While a prolonged period of wet and unsettled weather is getting underway across the West Coast, a gradual and dramatic warmup will occur across the center of the country through the coming weekend.
An important feature that will aid in the warmup across the Plains is a stalled upper-air low pressure system sitting off the coast of the Pacific Northwest. It is this upper-air disturbance that will cause the unsettled weather across the West as several smaller disturbances rotate around it.
As the feature sits and spins off the West Coast, it will cause a large dip in the jet stream off the coast. As this happens, it will cause a large northward bulge in the jet stream in the central United States.
With the jet stream retreating northward, a mild southerly breeze will allow temperatures to steadily warm through the end of the week and into the weekend. The warmth will be accompanied by an abundance of sunshine.
Despite high temperatures across the central and southern Plains forecast to be above normal today, they will be the coolest they will be for the rest of the week as they warm into the 50s and 60s.
The warmth will also spread eastward later this week into the Ohio and Tennessee valleys as well the Gulf Coast and Southeast.
Temperatures will only continue to gradually warm into the weekend as the jet stream continues to build northward.
This weekend, widespread temperatures of 10-20 degrees above normal will spread from the Front Range of the Rockies into the Ohio and Tennessee valleys. Many locations will be flirting with record highs.
The warmth will continue into the first part of next week; however, it appears the stretch of warmth will come to an end either late on Monday or Tuesday as a cold front comes sweeping through.
Thumbnail photo courtesy of Photos.com
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