To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of ...

Climate deniers are quick to say ‘I told you so’ when the mercury drops. But a warmer planet impacts weather in ways that can seem counterintuitive. Record cold temperatures are once again expected to ...

Much below normal temperatures should persist across the eastern U.S. into early February before moderating slightly.

The west half of the country, including the Midwest, will start to warm up. But that won't be the case for the East Coast.

The sudden blast may come as a shock to many Americans after a mostly mild start to winter, but that warmth may be partly ...

A 2025 satellite image shows a series of ghostly ice swirls sculpted on the surface of Lake Michigan by strong winds during an extreme cold snap that covered Chicago in a blanket of snow.

A rare and exceptionally early disruption of the polar vortex is sending brutally cold air across much of the United States, marking one of the earliest notable polar vortex disruptions observed since ...

A polar vortex is expected to bring two surges of extremely cold air to the U.S. in January. Here's what to know in Middle ...

The majority of the United States will experience chilling temperatures due to a blast of arctic air from Canada. The Midwest ...

Powerful winter storms which led to deaths and power outages in the UK and Ireland were made more likely by an intense swirling vortex of winds miles above the Arctic, say scientists. Powerful winter ...