While forecasters can't yet say for sure, a warmer stretch of weather appears likely for much of the nation. Here's when to expect a warm-up.

The Polar Vortex is expected to be impacted by a Sudden Stratosphere Warming, bringing cold air to the eastern US.

While forecasters can't yet say for sure, a warmer stretch of weather appears likely for much of the nation. Here's when to expect a warm-up.

Folks in the frigid Northeast will finally get a reprieve from the worst of the bitter cold, as soon as Tuesday, Feb. 10, forecasters said.