This diagram shows the general pattern and position of a stretched polar vortex that has brought the US multiple blasts of Arctic cold this winter.(CNN Weather via CNN Newsource) For Bay Area ...

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.

There is a sudden warming about to happen high up in the atmosphere. This warming usually affects the Polar Vortex.

It’s really, really cold again — as the US shivers through at least the eighth blast of air from the Arctic this winter. Winter, which is warming faster than any other season for much of the ...

The polar vortex could bring a cold blast to millions across America in the second half of March, AccuWeather said in a media advisory sent to Rigzone recently. “AccuWeather long-range experts ...

Winter weather lingers as a major shift in the weather pattern could have millions across the United States once again ...

Accuweather Senior Meteorologist Paul Pastelok says the March polar vortex disruption is one of the largest meteorologists have seen in a long time. A polar vortex is a large area of low pressure ...

Scientists say it’s being caused by a misbehaving polar vortex combining with a key weather pattern that seems to be stuck in place. Some scientists say these factors and this winter could be ...

The cause of the week-long deep freeze? A polar vortex collapse. Now, meteorologists are calling for another collapse in the middle of March, one that could plunge the U.S., Canada, and parts of ...

Paul Pastelok, a senior meteorologist and lead long range forecaster for AccuWeather, told the Advance/SILive.com that the “strongest attack” on the polar vortex of the year (so far ...