Published: Apr 26, 2010 11:37 AM EDT

YAZOO CITY, Miss. -The death toll from this weekend's severe weather is growing, as FEMA gears up to inspect the damage from the weekend's severe weather in Mississippi and three other southern states.  At least 12 people are now dead from storms across the southern part of the United States.

Mississippi Gov. Haley Barbour says the tornado that tore through 16 counties in his state on Saturday was "enormous."

FEMA will take a look at the damage from the weekend tornado and storms that lashed four southern states. Teams from the Federal Emergency Management Agency will concentrate on Mississippi, where 10 of the 12 fatalities happened. The inspection is the first step toward a possible presidential disaster declaration.

The National Weather Service says it had winds of 160 miles an hour, and left a path of destruction at least 50 miles long. Hundreds of homes were damaged in the four states: Mississippi, Louisiana, Arkansas, and Alabama. Two storm-related deaths were also reported in Alabama. Survivors are spending another day cleaning up.