displacing the vortex from its normal position at the poles and possibly moving it over the U.S. A polar vortex collapse is expected over the next two weeks, potentially bringing cold air and snow ...

It’s really, really cold again – as the US shivers through at least the eighth blast of air from the Arctic this winter. Here’s why it keeps happening.

The seemingly imminent polar vortex collapse will result in arctic air being released into North America, marking the second instance of extreme winter weather this year ...

The most unusually cold air in the Northern Hemisphere will move into the Plains and Midwest this weekend as the polar vortex lobe zaps the country like a jellyfish tentacle. Temperatures may be ...

The polar vortex is a “constant feature” that begins to develop sometime in September and persists through sometime in spring ...

Several days into the start of spring, wintry weather has returned following the arrival of a cold air mass.AccuWeather’s ...

Meteorologists also project a few rainy days ahead, which should aid in relieving areas of New England experiencing weak to ...

The polar vortex is area of fast-moving winds well above the Earth’s surface and the jet stream that circle the Arctic during the Northern Hemisphere’s coldest months. When it’s strong ...