An arctic air mass sprawling across the eastern, central and parts of the western U.S. on Monday will channel temperatures 20-30 degrees below already historically cold January averages and is poised to slam parts of the South with a disruptive winter storm.

More than 170 million people across the United States, from the Mexican border to the Canadian border are under cold weather alerts ahead of a crippling winter storm expected to sweep through the south from Texas to Georgia,

President Donald Trump signed an executive order Monday temporarily halting offshore wind lease sales in federal waters and pausing the issuance of approvals, permits and loans for both onshore and offshore wind projects.

President Donald Trump suspended new federal offshore wind leasing pending an environmental and economic review, saying wind mills are ugly, expensive and harm wildlife. "We're not going to do the wind thing.

The Central Coast again gets a glancing blow from a powerful Santa Ana event in Southern California. We could even see shower in the weekend forecast.

Elevated fire threat is accompanying the return of Santa Ana winds that are taking aim for Southern California at the beginning of the week. While the Southland’s weather conditions have been relatively mellow throughout the weekend,

Southern Californians are bracing for gusty winds and a heightened risk of wildfires, as another Santa Ana wind event is expected to bring back fire danger to the region.The National Weather Service has issued a warning of a "particularly dangerous situation" for parts of Los Angeles and Ventura counties from Monday afternoon through Tuesday morning due to low humidity and damaging Santa Ana winds.

TONIGHT: FIRST ALERT. Dangerous cold as air temperatures will be on either side of 0°. Wind chill values will be in the teens & 20s below 0°. NW winds will gust to 25 mph.

Dangerous cold arrives Monday morning in Chicago. The brutally cold morning brings wind chills of -20 to -25 degrees. A cold weather advisory is in effect until noon. The core of the polar air will settle across the Chicago area Monday night into Tuesday morning.