The biggest swings in the jet stream are associated with the most energy. Under the right conditions, that energy can bounce ...

Watch as a massive bowl of Arctic air is set to bring extreme, potentially record-breaking cold temperatures to parts of the ...

What is the Polar Vortex? The polar vortex is a large area of low pressure and cold air surrounding the Earth's poles. Normally, this cold air remains contained within the Arctic Circle, but ...

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States. This week, ...

Colder air is becoming re-established in the central and eastern United States after a recent warmup. Over the next 10-14 ...

A powerful winter storm, influenced by a polar vortex, is impacting much of the U.S., bringing heavy snow, ice, and extreme ...

Some places could be colder than -40 C! 🥶 ...

After President Trump pointed to a winter storm as evidence against global warming, North Carolina scientists point to ...

A crippling winter storm that could paralyze parts of the Southern and Central U.S. this weekend, and some of the effects ...

Scientists are closely monitoring changes in the polar vortex and what they could mean for Earth over the next decade. Shifts ...

A sprawling winter storm that left hundreds of thousands without power, grounded thousands of flights and disrupted travel ...

High above the Arctic, scientists are tracking a major change in the atmosphere this January, an event similar to what ...