In this aerial photo, destroyed businesses along U.S. Highway 64 sit among rubble in Vilonia, Ark., Monday, April 28, 2014. A tornado struck the town late Sunday. Vilonia was hit hard Sunday for the second time in three years. Four people were killed in a 2011 storm. (AP Photo/Danny Johnston) (AP2014)
Kayla Holcey, right, holds her 8-month-old son Kristian Hampton as she looks at the debris that was once her home, Tuesday, April 29, 2014, in Crawford, Ala. Holcy said that she was terrified that her son had been killed until she heard his cries under the rubble. A tornado tore through the Crawford community before dawn. (AP Photo/The Ledger-Enquirer, Robin Trimarchi) (The Ledger-Enquirer2014)
Larry Smith's camper shelter near Stedman, N.C., was destroyed after a possible tornado passed by his house Tuesday, April 29, 2014. At least five counties in eastern North Carolina reported tornadoes on Tuesday. (AP Photo/The Fayetteville Observer, James Robinson)
Faye Busby looks over her living room after a tornado ripped part of the roof off of her home in Graysville, Ala.,Tuesday, April 29, 2014. A strong line of tornado-producing storms made its way across the southeast Monday causing damage in the area.(AP Photo/AL.com, Tamika Moore) (AL.COM2014)
A row of lightly damages houses, top, face destroyed homes in a Vilonia, Ark., neighborhood Monday, April 28, 2014 after a tornado struck the town late Sunday, killing at least 16 people. (AP Photo/Danny Johnston) (AP2014)
Damian Barnes's mobile home was thrown 20 feet and destroyed during a tornado that struck the area Monday, March 7, 2014 near Collins, Miss. Barnes along with his girlfriend and two children were asleep when the tornado destroyed it leaving Barnes injured and having to pull the others from the wreckage. (AP Photo/Hattiesburg American, George Clark) (AP2014)
Residents leave their destroyed homes as a firefighter walks through the rubble Tuesday, April 29, 2014, in Crawrford, Ala. A tornado tore through the Crawford community before dawn. (AP Photo/The Ledger-Enquirer, Robin Trimarchi) (The Ledger-Enquirer2014)
Friends and relatives search through the remains of a child care center in Louisville, Miss., Tuesday, April 29, 2014. The facility and the auto repair shop next door were demolished by a tornado Monday. Numerous businesses, residences and the community hospital were destroyed or heavily damaged after a tornado hit the east Mississippi community Monday. Louisville is the county seat and home to about 6,600 people. (AP Photo/Rogelio V. Solis) (AP2014)
A house is destroyed when a tornado passed in the Straight Mountain community of Blount County, Ala., Tuesday, April 29, 2014. A dangerous storm system that spawned a chain of deadly tornadoes over three days flattened homes and businesses, forced frightened residents in more than half a dozen states to take cover and left tens of thousands in the dark Tuesday morning. (AP Photo/ AL.com, Mark Almond) (AL.COM2014)
Oscar Monagan, 70, holds his three-month-old Rottwiler puppy Sara after a tornado destroyed his Crawford, Ala., home, Tuesday, April 29, 2014. (AP Photo/The Ledger-Enquirer, Robin Trimarchi) (AP2014)
A trail of debris, bottom, leads along the path of a tornado-devastated neighborhood in Vilonia, Ark., Monday, April 28, 2014, after a tornado struck the town late Sunday. The most powerful twister this year carved an 80-mile path of destruction through suburbs north of the state capital of Little Rock, killing at least 16 people. (AP Photo/Danny Johnston) (AP2014)
Apartment employees work to remove two trees from a building at Azalea Trace Apartments Tuesday, April 29, 2014, in Vicksburg, Miss. after heavy winds and rain toppled countless trees across Warren County Monday evening. A dangerous storm system that spawned a chain of deadly tornadoes over three days flattened homes and businesses, forced frightened residents in more than half a dozen states to take cover and left tens of thousands in the dark Tuesday morning. (AP Photo/The Vicksburg Evening Post, Justin Sellers) (AP2014)
Two young boys stand near the base of a fallen tree, Tuesday, April 29, 2014,near Sandersville, Miss. after a tornado tore a path through Jones County on Monday. (AP Photo/The Hattiesburg American, Kelly Price) NO SALES.
A destroyed house and demolished automobile windshield are examples of the fury of Monday's tornado that hit this south Louisville, Miss., neighborhood Tuesday, April 29, 2014. Numerous businesses, residences and the community hospital were destroyed or heavily damaged after a tornado hit the east Mississippi community Monday. Louisville is the county seat and home to about 6,600 people. (AP Photo/Rogelio V. Solis) (AP2014)
An automobile lies upside down outside one of several tornado damaged apartment units in south Louisville, Miss., Tuesday, April 29, 2014. Numerous businesses, residences and the community hospital were destroyed or heavily damaged after a tornado hit the east Mississippi community Monday. Louisville is the county seat and home to about 6,600 people. (AP Photo/Rogelio V. Solis) (AP2014)
Brenda Thomas wrings her hands as she recalls the harrowing moments she and her family shared Monday when a tornado tore through their community and destroyed their house in Louisville, Miss., Tuesday, April 29, 2014. Numerous businesses, residences and the community hospital were destroyed or heavily damaged after a tornado hit the east Mississippi community Monday. Louisville is the county seat and home to about 6,600 people. (AP Photo/Rogelio V. Solis) (AP2014)
A volunteer throws debris from a destroyed house onto a fire in Vilonia, Ark., Wednesday, April 30, 2014. A tornado struck the town late Sunday. Along stretches of damaged houses in both towns, volunteers with chain saws cleared trees from across homes, driveways and streets. (AP Photo/Danny Johnston)
Ray Harvey talks on his cell phone while looking over the storm damage to the rear of his mobile home near Stedman, N.C., Tuesday, April 29, 2014. At least five counties in eastern North Carolina reported tornadoes on Tuesday. (AP Photo/The Fayetteville Observer, Johnny Horne) (AP2014)
In this image made with a fisheye lens, Rickey Shelton looks at the hallway on Tuesday, April 29, 2014, where he and his wife, Silver Shelton, took shelter when their home was destroyed in Fayetteville, Tenn. Around 50 tornadoes ravaged the South Monday, according to the National Oceanic and Atmospheric Administration's Storm Prediction Center. (AP Photo/Mark Humphrey) (AP2014)