Axios

With residents of Mississippi and portions of Alabama reeling from the damage sustained during Friday night's deadly tornado outbreak, more severe weather is occurring across the Southeast.

The big picture: The National Weather Service issued a rare high-risk outlook for excessive rainfall in Alabama and Georgia through Monday morning, including parts of Atlanta, and warned of potentially catastrophic flooding in these areas. Parts of Mississippi, Alabama and Louisiana also faced the threat of tornadoes overnight.

Dozens of people were killed and homes were destroyed as tornadoes spiraled through parts of Mississippi and Alabama on Friday night.

The big picture: More tornados are expected to hit Mississippi, Alabama and other Southern states Sunday, Axios' Andrew Freedman reports.

Deadly and destructive tornadoes spiraled through parts of Mississippi and Alabama overnight Friday, killing at least 26 people, injuring dozens, and destroying homes and towns.

The latest: The National Weather Service said Saturday that the deadly tornado which struck the small towns of Rolling Fork and Silver City in southwest Mississippi has been given a preliminary rating of EF-4 -- the second highest.