As the polar vortex begins to stir, subtle clues point to the coming seasonal shift. So, when will freezing temperatures ...

The polar vortex is starting to stir up, bringing the earliest hints that the seasons are changing. When will Ohio see its ...

The polar vortex is a broad, fast ribbon of cold air that encapsulates the Arctic high in the stratosphere. Stable, it ...

The polar vortex is stirring up, bringing the earliest hints that the weather is changing with the new fall season. When is the first frost in Tennessee?

The polar vortex is stirring up, bringing the earliest hints that the seasons are changing. When will Wisconsin see its first ...

According to climate scientists, record levels of Arctic ice in 2025 could increase cold spells in the United States and ...

Temperatures are staying relatively warm throughout Illinois this week, despite fall officially starting Sept. 21. But ...

The polar vortex is beginning to stir, signaling the first signs of seasonal change. Here's when to expect the first frost in New Hampshire.

Summer may end on a cooler note for parts of the U.S., with meteorologists suggesting that a weakened polar vortex could ...

The polar vortex is a large area of low pressure and cold air surrounding the Earth’s poles. Under normal conditions, it spins tightly around the Arctic. However, as the Arctic warms, this system ...

The polar vortex is stirring up, bringing the earliest hints that the seasons are changing. What does that mean for Vermont?