All Posts Tagged Tag: ‘circumpolar whirl’

Polar Vortex: Harbinger of Coldness

With a polar vortex gripping the northern and central regions of the country, the National Weather Service warns that “life-threatening wind chill” is something to be taken seriously, as parts of the U.S. brace for temperature lows not seen in decades. The NWS broadcasts, “The coldest temperatures in almost two decades will spread into the northern and central U.S. today …

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