When the polar vortex stumbles, the weather at ground level can pivot from mild to brutal in a matter of days. A circulation ...

The Polar vortex is causing temperatures to plummet dangerously across the Philadelphia region, and frostbite could become a ...

An unusually strong disruption in the upper atmosphere is setting the stage for a winter pattern that could lock much of the United States into bitter, prolonged cold. Forecasters are tracking a polar ...

In yet another sign that winter weather is either here or will be soon, the dreaded polar vortex is making news yet again. Its potential arrival in the United States over the next few weeks is cause ...

A Polar Vortex brought temperatures so cold in January 2014 that it froze Niagara Falls. Signals of a rare sudden stratospheric warming in the next two weeks have some forecasting an imminent Arctic ...

Fall weather in Massachusetts may be in for a cold snap in the next few weeks. The National Weather Service's Climate Prediction Center is forecasting temperature drops throughout the country in the ...

Just in time for Thanksgiving week, another Arctic blast is on the move toward the U.S., bringing the potential for bitter cold and heavy snow accumulations to Indiana — possibly beginning during the ...

Boston has seen just one day so far this month where the average temperature was above the seasonal norm, daring me to ask — are you over the cold yet? Astronomical winter hasn’t even arrived (that ...