Alerts for cold weather are in effect for nearly half of the U.S. population, running from the northern Plains to the Gulf ...

The storm had knocked out power to more than half a million utility customers by early Friday as it moved across Ireland.

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

In 2024, an uptick in solar activity made northern lights visibility reach a 500-year peak, according to NASA, bringing ...

President Trump revoked a Biden-era executive order that affirmed the longstanding practice of including the total number of ...

The center's map shows the possible view line for the ... the aurora will be visible directly overhead in the northern United States, according to the prediction center. For the best viewing ...

Snow and sleet started falling in Texas as officials begin to close schools and airports. Snow and ice could bring major ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...

When this vortex weakens, it can send frigid air from the Arctic southward, bringing dangerously cold temperatures to mid-latitude regions like the southern United States. In 2021, the polar ...

The agency's latest forecast map shows the aurora view line reaching ... shows the northern lights visible in parts of the northern United States as a result of a geomagnetic storm reaching ...

As the West Coast braces for fiery winds and the Northeast shivers under a polar vortex, the nation finds itself caught between two extreme weather fronts.