A polar vortex has triggered freeze warnings across Texas, leading to dangerous conditions for people and infrastructure.

The next round of bitter cold was set to envelop the southern U.S. on Tuesday, after the first significant winter storm of ...

Cold weather alerts and freeze alerts have been issued from New Mexico to Florida. Wind chills are near 20 degrees all the ...

The plunging polar vortex is bringing subfreezing temperatures to some of the southernmost points of the U.S. A forming storm ...

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