A rush of Arctic air will plunge parts of North America into bitter cold this weekend, bringing heavy snow, strong winds and ...

A powerful pattern is setting the stage for an amplified jet stream that will shunt cold air south, and the roots of this ...

A rush of Arctic air will plunge parts of North America into bitter cold this weekend, bringing heavy snow, strong winds and frigid temperatures to parts of Canada. Meteorologists say temperatures ...

After a strong cold front comes through this Saturday, we could see temperatures 20 degrees colder than normal. Why is that, ...

Arctic air remains settled over southern Colorado on Wednesday with negative morning wind chills and freezing fog giving way to chilly afternoon sunshine. Another weak snowstorm arrives Thursday.

The Southern Oscillation ... event will weaken the polar vortex allowing it to move south; La Niña Modoki; The largest ozone hole since the La Niña event of early 2011 that helped result in the ...

An ozone hole over the Arctic can influence the formation or ... ozone weakens vertical heat fluxes, stabilizing the polar vortex (PV) and decreasing sudden stratospheric warmings (SSWs ...

Minot residents have been experiencing temperature whiplash with relatively warm temperatures dropping precipitously below ...

These cold weather snaps featuring arctic air leaving its usual polar confines can be the result of a weakening of the polar vortex ... the El Niño/Southern Oscillation, in the tropical ...

Winter in the Northern Hemisphere is shaping up to be a period of great atmospheric dynamism, with the polar vortex (PV) playing a crucial role. Currently, the Arctic Oscillation remains close to ...