A Polar vortex has covered the Philadelphia region under a canopy of frigid temperatures, but many people may not realize what a Polar vortex actually is, and the dangers — like frostbite — such ...

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 ...

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 ...

Grab your coats, it's getting chilly. A polar vortex broke, and severe temperatures are set to dominate most of the United States, including the Midwest, in the coming days. The polar vortex will ...

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 ...