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 the coming days and ...

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

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by treacherous conditions.

These type of polar vortex disruptions — stretching or moving entirely out of the North Pole — are happening more frequently, ...

Another winter storm will develop over Texas later this week, bringing potentially historical snowfall and icy conditions to ...

Parts of all states in the lower 48 woke up to subfreezing temperatures Tuesday due to a weather pattern that will keep ...