An artic blast is bringing dangerous sub-zero wind chills to the Chicago area, and temperatures will drop even more on Saturday night.

At 8:09 p.m. on Saturday, the National Weather Service issued a dense fog advisory in effect until Sunday at 10 a.m. for Benton County Lowlands, Linn County Lowlands and Lane County Lowlands.

Carquinez Strait and Delta, Northern Sacramento Valley, Central Sacramento Valley and Southern Sacramento Valley are included ...

Northern Plains through the Southeast are under cold weather alerts this weekend and will face dangerously cold wind chills.

Cook County opens courthouse warming centers due to forecasted dangerous wind chills, offering residents shelter, water, snacks, and pet accommodation.

Warming centers will be available to those who need to escape the bitterly cold temperatures and wintry conditions this weekend into Monday.

A dense fog advisory was released by the National Weather Service on Saturday at 5:56 a.m. in effect until 9 a.m. for Mobile and Baldwin counties.

North Bay Interior Valleys and East Bay Interior Valleys were placed under a dense fog advisory by the National Weather Service on Saturday at 4:31 a.m. The advisory is in effect until 11 a.m.