When the Polar Vortex is in a weakened state, a jet stream wobble sending polar air into the mid-latitudes becomes more ...

The term “atmospheric river” was coined in 1994 and has since quickly gained popularity. But what does it really mean?

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the northern hemisphere).

The images below show how the influence of climate change from as far away as the mid-latitudes can trigger an outbreak of arctic air over the United States weeks to months later. Unable to view ...