A rare stratospheric event is forecast to unleash bone-chilling air from a weakening vortex across the US and New England, ...

The polar vortex is weakening, which means New England is in for a colder than usual December, with episodic cold snaps.

Over the next 10 days, scientists say, changes in the stratosphere will upend weather patterns and set the stage for a cold, snowy December across parts of the Northern Hemisphere.

It's been a warm autumn, so far. But the polar vortex is forecast to change unusually early, and that could impact your ...

The phrase "polar vortex" has captured public attention and is now often misused to describe short-term bouts of frigid ...

A blast of polar vortex cold air is expected to hit parts of the country around Thanksgiving. What to expect in Tennessee.

It has been a warm autumn, so far. But the polar vortex is forecast to change unusually early, and that could impact your ...

Forecasters are expecting a weakened polar vortex to bring cold air after Thanksgiving. An uncommon occurrence at this time ...

La Niña and polar vortex weather patterns will be at play for the 2025-2026 winter season. Here's what we know about the ...

NBC 5 Storm Team Meteorologist Kevin Jeanes took a look at what’s going on and what the weather may look like going into ...

A wide swath of the western U.S. may be in for below-average temperatures as forecasts suggest an Arctic blast is looming.

Another Arctic blast is on the move toward the U.S., bringing the potential for bitter cold and heavy snow accumulations to Michigan.