This pre-season shift could bring multiple storm systems and potential snow in higher elevations, including the Catskills, ...

Meteorologists forecast an over 20-degree drop in temperature below normal across the Eastern United States, and freezing ...

The polar vortex is an area of low pressure, a wide expanse of swirling cold air that is parked in polar regions, according ...

The polar vortex is beginning its seasonal strengthening, signaling a gradual shift toward cooler weather. Frost advisories were issued in parts of the Great Lakes region, New York, and New England as ...

In an early sign of the winter weather that's coming, the dreaded polar vortex is making news yet again. The polar vortex is "ramping up from its summer slumber," said meteorologist Judah Cohen in an ...

A blast of arctic air could bring temperatures cold enough for the Panhandle to see its first freeze of the season.

The polar vortex is a large region of low pressure and cold air that has always existed around Earth's poles. While the polar vortex is weakening for the season, it does not directly cause winter ...

The polar vortex is beginning to stir, signaling a gradual shift toward cooler fall weather in the northern U.S. Tennessee is expected to see mild temperatures through December, with the average first ...

A schematic of temperature measurements shows how it is 40 degrees Celsius colder inside the north polar vortex (indicated by the yellow line) compared to outside the vortex. A rare glimpse into the ...