
Volunteers throw tornado debris in a burn pile on April 30, 2014 in Vilonia, Ark.
Mark Wilson/Getty Images

Relatives of Bob Butts help look for items to salvage from his home after it was destroyed by a tornado on April 30, 2014 in Louisville, Miss.
Joe Raedle/Getty Images

Michelle Butts, left, falls to her knees as she reacts to seeing her parents' home for the first time after it was destroyed by a tornado on April 30, 2014 in Louisville, Miss.
Joe Raedle/Getty Images

Bob Butts, center, comforts his daughter, Michelle Butts, left, along with his wife, Kay Butts, right, as Michelle arrives from out of town to see the house for the first time after it was destroyed by a tornado on April 30, 2014 in Louisville, Miss.
Joe Raedle/Getty Images

Before and after aerial images, taken on April 23 2013 and April 28, 2014, show the path of destruction after a tornado hit Baxter Springs, Kansas.
DigitalGlobe

Before and after aerial images, taken on April 23 2013 and April 28, 2014, show the path of destruction after a tornado hit Baxter Springs, Kansas.
DigitalGlobe

Before and after aerial images, taken on April 23 2013 and April 28, 2014, show the path of destruction after a tornado hit Quapaw, Kansas.
DigitalGlobe

Kayla Holcey, right, holds her 8-month-old son Kristian Hampton as she looks at the debris that was once her home in Crawford, Ala., April 29, 2014
Robin Trimarchi/AP Photo

Derrick Price helps push a mattress from the second floor bedroom as he helps salvage what he can from a friends apartment after a tornado in Tupelo, Miss., April 29, 2014.
Joe Raedle/Getty Images

Gunner Goad helps a family friend salvage what he can from his business that was destroyed by a tornado in Tupelo, Miss., April 29, 2014.
Joe Raedle/Getty Images

A child is pictured in a kayak floating inside a house in Gulf Breeze, Fla., April 30, 2014.
@_itsabsss/Twitter

Austin Hargrove, left, and Haley Hracke, right, help recover personal items from a friends home that was destroyed by Sunday's tornado, April 29, 2014, in Vilonia, Ark.
Eric Gay/AP Photo

Theresa Long reacts inside her destroyed house in Mayflower, Ark., April 29, 2014.
Carlo Allegri/Reuters Photo

Friends, seen through debris, comfort each other at the site of a a home destroyed by Sunday's tornado, April 29, 2014, in Vilonia, Ark.
Eric Gay/AP Photo

Aerial view of the central town after a tornado hit Vilonia, Ark., April 28, 2014.
Carlo Allegri/Reuters Photo

Sam Smith takes a break from helping a family friend salvage what he can from his business that was destroyed after a tornado hit, April 29, 2014 in Tupelo, Miss.
Joe Raedle/Getty Images

Teresa Ingram looks for belongings in the debris after a tornado passed through destroying Billy Barbs mobile home park, April 29, 2014, in Athens, Ala.
Butch Dill/AP Photo

A scene from the tornado in Decatur Ala., April 28, 2014.
Courtesy Allan Detrich

A U.S. flag sticks out the window of a damaged hot rod car in a suburban area after a tornado near Vilonia, Ark. April 28, 2014.
Carlo Allegri/Reuters

Constance Lambert embraces her dog after finding it alive when returning to her destroyed home in Tupelo, Miss., April 28, 2014.
Brad Vest/The Commercial Appeal/AP Photo

Residents survey damage along a street in Tupelo, Miss., April 28, 2014.
Thomas Graning/The Daily Mississippian/AP Photo

Dead and injured cattle lay in a field near Vilonia, Ark., April 28, 2014. A tornado's path ran through the field April 27, 2014.
Danny Johnston/AP Photo

Nursing home personnel assist a resident as she is wheeled to a waiting bus outside a Louisville, Miss., nursing home, April 28, 2014 after the facility and the Winston Medical Center next door were heavily damaged by a tornado.
Rogelio V. Solis/AP Photo

A resident rushes past an SUV that was tossed by a tornado in Four Corners, Miss., April 28, 2014.
Rogelio V. Solis/AP Photo

Jimmy Sullinger sits and watches lightning as a storm approaches the gas station where he works, April 28, 2014, in Berry, Ala.
Butch Dill/AP Photo

Damaged buildings are seen throughout Tupelo, Miss., April 28, 2014, after tornadoes tore through the region.
Thomas Graning/The Daily Mississippian/AP Photo

Swan Creek Community residents check the weather from the underground shelter in Limestone County, south of Athens, Ala., April 28, 2014.
Jeronimo Nisa/The Decatur Daily/AP Photo

Friends and family sift through debris at a home in Vilonia, Ark., after it was destroyed by a tornado, April 28, 2014.
Eric Gay/AP Photo

Jodi Walls pushes a box of belongings out of a friend's house while cleaning up after a large tornado tore through Tupelo, Miss., April 28, 2014.
Brad Vest/The Commercial Appeal/AP Photo

Seventeen year-old Deanna Locke and her siblings including, from left, Charlotte, 13; Drew, 9; and Trinity, 11; examine a downed tree across the street from their home in Tupelo, Miss., after a suspected tornado moved through town earlier on April 28, 2014.
Jim Lytle/AP Photo

Tabitha Hawk posted this photo on Twitter on April 28, 2014 after a storm in Tupelo, Miss.
Courtesy Tabitha Hawk

Steven Heicher posted this photo on Twitter on April 28, 2014 with the caption, "MAJOR damage in North Tupelo. This is serious guys!"
@stevenheicher/Twitter

Brandy Davis posted this photo to Twitter on April 28, 2014, showing damage after a tornado in Tupelo, Miss.
@brandydavis01/Twitter

People walk between two destroyed houses in Mayflower, Ark., April 28, 2014, after a tornado struck the town April 27, 2014.
Danny Johnston/AP Photo

Bob Hessee checks out property owned by a friend and damaged by a tornado in Baxter Springs, Kan., April 28, 2014.
Orlin Wagner/AP Photo

Residents view damage from a tornado in Baxter Springs, Kan., April 28, 2014.
Orlin Wagner/AP Photo

A tornado-damaged home is covered by tarps in Baxter Springs, Kan., April 28, 2014.
Orlin Wagner/AP Photo

The remains of a home damaged by a tornado, April 27, 2014, in Baxter Springs, Kan., April 28, 2014.
Orlin Wagner/AP Photo

Residents survey the damage in a residential neighborhood struck by a tornado, April 28, 2014.
Gary Crow/Tulsa World/AP Photo

Extensive tornado damage is seen in Mayflower, Ark., April 27, 2014.
Courtesy of James Bryant/AP Photo

Residents assess storm damage in Mayflower, Ark. after a tornado ripped through the town, April 27, 2014.
@StormCoker/Twitter

A scene from the tornado North of Searcy Ark., April 27, 2014.
Courtesy Allan Detrich

Storm clouds loom near Baxter Springs, Kan., April 27, 2014.
Jill Fitchner

Katie McCoy posted this image on Twitter with this caption: "@mikebettes tornado that touched down here in Southeast KS!," April 27, 2014.
@Officialkatie44/Twitter

Twisted trees and power lines are visible following a tornado in Baxter Springs, Kan., April 27, 2014.
Roger Nomer/The Joplin Globe/AP Photo

A man walks past a wrecked automobile and RV on Interstate 40 in Mayflower, Ark., April 27, 2014.
Danny Johnston/AP Photo

Trailers and motor homes are piled on top of each other at Mayflower RV in Mayflower, Ark., April 27, 2014.
Danny Johnston/AP Photo

John Ward, an automobile and RV dealer, looks an tornado damage to one of his trucks in Mayflower, Ark., April 27, 2014.
Danny Johnston/AP Photo

Storm clouds loom over a farm near Baldwin City, Kan., April 27, 2014.
Orlin Wagner/AP Photo

A K-9 rescue unit surveys storm damage in Baxter Springs, Kan., April 27, 2014.
Roger Nomer/The Joplin Globe/AP Photo

A police officer talks to residents in Baxter Springs, Kan. after a storm tore through the town, April 27, 2014.
Roger Nomer/The Joplin Globe/AP Photo