A displaced and stretched polar vortex will send multiple waves of Arctic air into the central and eastern United States ...

Winter storm warnings and advisories have been issued across nine states in the U.S. Stay with Newsweek for the latest ...

Americans in nine US states are being warned to prepare for slippery roads, low visibility and hazardous travel conditions ...

According to a forecast map shared by the agency, the states with the highest probability of seeing below average ...

A strong polar vortex doesn't cause cold weather — it does the opposite. Here's what to know about polar vortices, how they work.

Meteorologist Scott Hetsko explains the Polar Vortex, what it is and why it's important to our weather this time of year.

Winter hasn't even officially started, but parts of the country are already bracing for what could feel like the deep freeze ...

Northern Illinois is staring down another blast of bitter Arctic air later this week, capping off what has already been one ...

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The National Weather Service issued winter storm advisories for six states as up to 12 inches of snow is expected to fall ...

A powerful 7.6-magnitude earthquake hit off the coast of Japan, sparking fires and triggering a tsunami warning. NBC News’ ...