A week-long, polar vortex-related Arctic outbreak rivaling any seen so far this winter is slated to bring frigid conditions to much of the U.S. east of the Rockies next week. Threat level: The Arctic air is likely to send temperatures plunging to at least 30 degrees below average for mid-February across the Midwest and Plains states,

Weather Impact Alert Days have been issued for Wednesday through Friday of next week. Here's the timeline of the serious cold.

On the heels of successive winter storms that brought heavy snow and ice to a wide swath of the United States, another arctic blast tied to the polar vortex will send temperatures plummeting across the country early next week,

The U.S. is set to feel the impacts of an Arctic polar vortex next week, meteorologists have warned, with sub-zero temperatures possible across much of the country. Meteorologists explained that polar vortex intrusions are usually not disruptive,

A weeklong, polar vortex-related Arctic outbreak rivaling any seen so far this winter is slated to bring frigid conditions to much of the U.S. east of the Rockies next week. Threat level: The Arctic air is likely to send temperatures plunging to at least 30 degrees below average for mid-February across the Midwest and Plains states,