Around 40 million people in the U.S. are under a winter storm warning from an unusual blast of severe winter weather.

A historic winter storm is poised to produce potentially record-breaking snows from coastal Texas to northern Florida late ...

BOSTON — Residents across the country from the Northern Plains to the tip of Maine are bracing for dangerously low temperatures as tens of millions of residents along the East Coast contend with a ...

Houston has been experiencing below-average temperatures as a polar vortex ushers in cooler conditions across the state.

A polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans.