NORFOLK, Va. (AP) — The plunging polar vortex brought subfreezing temperatures Tuesday to some of the southernmost points of the U.S., threatening to dump snow on parts of Texas and Oklahoma in coming days and contributing to a power outage in Virginia's capital that made the water unsafe to drink.

The arctic blast that descended on much of the U.S. east of the Rockies over the weekend has , thousands of , and led communities to set up , including one at a roller rink and another in the Providence, Rhode Island City Council chambers.

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