The polar vortex will affect Indiana, but not yet. When first frost dates might happen

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

When will it start getting cold in Illinois? See expected first frost dates

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

Dramatic change in polar vortex threatens to shake up spring weather

A rare phenomenon in the skies above Antarctica is likely to bring mixed weather for southern Australia in coming weeks.

Polar vortex stirring up. When should Tennessee expect its first frost?

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?
Insane Curiosity on MSN

How the Polar Vortex Collapse Could Change Our Climate Forever

The polar vortex is one of Earth’s most powerful climate systems and scientists believe it may be collapsing. This could ...

Sudden stratospheric warming to shift Australia’s spring forecast

A sudden stratospheric warming event over the Antarctic this week is expected to bring a chaotic spring to Australia’s south and a drier than average season to the nation’s east.