Severe weather has returned to the forecast for parts of the Mississippi Valley this weekend, an unwelcome sight for an area that is still picking up the pieces from a deadly tornado outbreak just last week.

As Southern America breathes a sigh of relief from last weekend's chaos, a new storm looms, threatening to stir up fresh fears and memories of devastation.

Weather forecasters warn about a major multiple-day outbreak of severe weather that includes multiple strong tornadoes from the Mississippi Valley to the Gulf Coast, Great Lakes and Atlantic coast through the weekend.