Severe storms bringing potentially damaging winds were sweeping through the Chicago area late Friday night, as a fast-moving squall line raced through the state. The fast-moving line of storms was capable of producing destructive winds over 70 miles per hour and potential tornadoes,

A line of storms will move into metro Atlanta on Saturday and Sunday with hail, damaging winds and tornadoes possible. Here's what to know about the causes of tornadoes, and the alerts for watches, warnings and emergencies.

The threat of tornadoes is moving east into the Mississippi Valley and Deep South a day after a massive storm system moving across the country unleashed winds that damaged buildings, whipped up dust s

The dangerous outbreak will sweep through the Midwest, South and East through the weekend. Saturday could be one of the worst severe weather days of the year.