A polar vortex brings bitterly cold Arctic air into southern Ontario. Here’s what it is and what you can expect.

What is polar vortex and how much snow is expected in US? A winter storm linked to polar vortex disruption has impacted ...

‘Temperatures ranging from 10 to 20 degrees below normal may make an average week during the winter season itself a challenge ...

Meteorologist Ava Marie says the forecast is holding as we expect 6-10 inches of snow across much of Maryland and at least an ...

Many of our most memorable winter storms, big or small, originate in the same general location: immediately east of the Rocky ...

The dangerous cold moving into Northern Michigan has experts warning people about the increasing risk of frostbite and ...

Starting Thursday, dangerously frigid air from Siberia and the North Pole is forecast to plunge the Great Lakes region into ...

What is the polar vortex? This article explains what a polar vortex is in simple terms, how it influences winter weather in ...

It’s going to be colder in Boston Saturday night than many places around the world that typically have much more frigid ...

The 2002 storm was rough, and ABC11 Don "Big Weather" Schwenneker says this weekend's storm could be on par with that one.