A polar vortex from the North Pole has shifted south over Canada, and will be pushing chilly sub-zero temperatures down into ...

A chilling forecast looms over the East Coast, with a polar vortex promising a hellish winter storm next week.

Storms, some of which may bring snow, are expected to accompany a push of colder air this week, and the next storm is ...

Such events distort the polar vortex, which causes Arctic air to descend into the U.S. and causes temperatures to plummet.

Boston saw overnight lows in the teens, hitting 13 degrees, tying a century-old record for coldest Dec. 5 morning.

Blast of frigid Arctic air ⚠️ Dangerous snow squalls expected in the Great Lakes and interior Northeast ❄️ Potential ...

Three rounds of Arctic air in the forecast ❄️ Snow and ice threat in the mid-Atlantic 🎄 White Christmas historical probabilities ...

Individuals experiencing homelessness in Washington, D.C., faced increased risk of hypothermia from freezing temperatures and extreme wind chill brought by last week’s polar vortex. The Arctic cold ...

WASHINGTON (AP) — The polar vortex hit its peak across much of America on Wednesday, with an icy grip that made Arctic Greenland seem like a toasty vacation spot in comparison. Even Mars has been ...

Rain was falling across much of the area on Tuesday and was expected to taper off by mid-afternoon, forecasters said.