National Weather Service meteorologists warned of temperatures cold enough to be fatal descending across most of the nation.
According to the NWS, the Arctic polar vortex is a powerful band of west-to-east winds that develops in the stratosphere, about 10 to 30 miles above the North Pole, during the winter season. It is ...
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Fueled by powerful winds and dry conditions, a series of ferocious wildfires erupted last week and roared across the Los Angeles area.
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