Winter storms are forecast to bring heavy snows and bitter winds across the regions.

Bitter cold is taking hold across the U.S. on Thursday, with millions waking up to freezing temperatures and in some areas, ...

Forecasters have said parts of the U.S. can expect frigid temperatures in December. A first round has arrived, and more cold ...

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