A sudden stratospheric warming event reversed the winds that make up the northern polar vortex on March 9. A new animation ...

Several days with temperatures of 10-20 degrees below the historical average could be dangerous to plants and ruin outdoor ...

It appears in September, when a seasonal lack of sunlight begins to make it cooler inside the Arctic region than outside, ...

A polar vortex collapse is set to send the mercury plunging as "extreme conditions" sweep across the US and Canada. The meteorological switch-up is set to develop by the middle of the month and ...

"The large polar vortex disruption from the second week of March is playing a key role in next week’s eastern US cold snap," meteorologist Judah Cohen of Atmospheric and Environmental Research told ...

Co-author Jeff Knight ... An intense stratospheric polar vortex can now be recognised as a warning to forecasters of increased risks of damaging storms. 'This was likely seen in the most recent ...

Co-author Jeff Knight ... “An intense stratospheric polar vortex can now be recognised as a warning to forecasters of increased risks of damaging storms. This was likely seen in the most ...

The polar vortex slid toward Europe in recent weeks, ushering in cooler temperatures to portions of Canada A significant disruption to the polar vortex over far Northern Canada will keep the ...

Scientists believe deadly Arctic winds were to blame for a series of savage storms that wreaked havoc in Britain over just a matter of days.

Don't put away those winter coats just yet. An April cold snap is forecast for much of the eastern half of the U.S. early next week, forecasters said, with freezes likely across portions of the ...