A massive winter storm dumped sleet, freezing rain and snow across much of the U.S. on Sunday, bringing subzero temperatures and halting air and road traffic. Tree branches and power lines snapped under the weight of ice, and hundreds of thousands of homes and businesses in the Southeast were left without electricity.

The were expected to continue into Monday followed by very low temperatures which could cause “dangerous travel and infrastructure impacts” for days, the ɫtv Weather Service said.

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