A new study says climate change has tripled the frequency of atmospheric wave events linked to extreme summer weather in the last 75 years ...

The polar vortex has taken on an unexpected pattern this winter — one that’s made part of the United States the most unusually cold place on the planet, at least so far this year.

The FOX Forecast Center reveals arctic air is descending and spreading across the Lower 48 states. FOX Forecast Center / FOX Weather The polar vortex has returned to the U.S., and frostbite ...

This week, parts of the U.S. are experiencing the 10th and coldest polar vortex event this season. Weather forces in the Arctic are combining to push the chilly air into the U.S. and Europe.

You might have heard the term “polar vortex” thrown around during the winter months, but what does it really mean and how does it affect us here in sunny Central Florida?

DES MOINES, Iowa — The coldest burst of Arctic air this season is coming to put an icy exclamation point on America's winter of repeated polar vortex invasions, meteorologists warn.

This will be the 10th time this winter that the polar vortex — which keeps the coldest of Arctic air penned in at the top of the world — stretches like a rubber band to send some of that big ...

The coldest burst of Arctic air this season is coming to put an icy exclamation point on America’s winter of repeated polar vortex invasions, meteorologists warn.

(AP) - The coldest burst of Arctic air this season is coming to put an icy exclamation point on America’s winter of repeated polar vortex invasions, meteorologists warn. And it will stay frozen there ...