A bitter blast of Arctic air and frigid wind chills that arrived in the Northeast following a major winter storm comes with an unexpected twist: a natural phenomenon called frost quakes. Unlike ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.

Extreme cold could expose residents of several states to conditions like hypothermia and frostbite over the weekend.

Michigan is facing dangerously cold temperatures and wind chills amid Arctic air this week, with officials warning people to beware of the risk of hypothermia and frostbite, and to take precautions.

This week's Arctic blast will send sub-freezing temperatures reaching as far south as the Gulf Coast states, which could set off frost quakes in areas that rarely experience the phenomenon.

TEMPERATURES this morning are as low -4.4C in some places across the country as frost and ice blast Ireland. And temperatures ...

A bitter blast of Arctic air and frigid wind-chill values that has arrived in the Northeast following a major winter storm could come with an unexpected twist. A natural phenomenon called frost quakes ...