Homes along Pralle Lane and Mary Pat Court were damaged in the storm, Saturday, June 1, 2013 in St. Charles County, Mo. The National Weather Service confirms at least two tornados were part of the Friday night storm that raked portions of the St. Louis area, damaging hundreds of homes but causing no serious injuries. (AP Photo/St. Louis Post-Dispatch, Robert Cohen) ( Severe Weather )
Del City and Edmond Fire Dept. rescue crews use boats to rescue residents from a flooded mobile home park off of Air Depot Blvd. between NE 10th and NE 23rd St. in Midwest City, Okla, Saturday, June 1, 2013, after up to eight inches of rain fell during the previous 24 hours. (AP Photo/The Oklahoman, Paul Hellstern) ( Severe Weather )
Matt Wyatt and Chase Biggs check the level of water flowing across Banner Road in El Reno, Okla as their friend, Tyler Eisenhour determines it is too deep and walks to their truck to find an alternate route to their work site on Saturday, June 1, 2013. (AP Photo/The Oklahoman, Jim Beckel) ( Severe Weather )
Oklahoma City Personnel Director Dianna Berry takes a photograph of the flooded basement of the city's building at 100 N. Walker on Saturday, June 1, 2013 in Oklahoma City Workers pumped enough water from Friday night's flood out by noon to get the level half way down the basement door. (AP Photo/The Oklahoman, Steve Sisney) ( Severe Weather )
Michael Furlow, of Ahlers Tree Service, Inc., of Edwardsville, Ill.,wraps a line around a fallen tree Saturday morning June 1, 2013 so it can be hoisted by crane off a home at 1239 St. Louis Street in Edwardsville, Ill that sustained damage from straight line winds. (AP Photo/The Telegraph, Margie M. Barnes) ( Severe Weather )
A police officer offers directions to a driver leaving this heavily damaged supply yard for Cactus Drilling Company on State Highway 66 in El Reno, Okla. on Saturday, June 1, 2013. Employee David Stottemyre was working in the lot when the tornado took aim at the plant. Stottemyre ran inside the large supply storage building and took shelter as the tornado passed over, leaving the building in a twisted pile of steel and metal. He was not injured. (AP Photo/The Oklahoman, Jim Beckel) ( Severe Weather )
Tammy Wade looks over what is left of her home that was destroyed by Friday's tornado that ripped through El Reno Okla. Saturday June 1, 2013 in El Reno Okla. (AP Photo/Nick Oxford) ( Severe Weather )
Rescuers search for the bodies of a family in the Oklahoma River near May Ave. after they disappeared in storms that went through central Oklahoma Saturday, June 1, 2013 in Oklahoma City, (AP Photo/The Oklahoman, Sarah Phipps) ( Severe Weather )
A man and woman comfort each other briefly as they join others in the search for items that can be saved in what remains of an upstairs bedroom in Kay and Bonnie Meritt's home at 20545 SW 15 in Union City, Okla. on Saturday, June 1, 2013. Bonnie Meritt said nine homes near her, including hers, were damaged or destroyed in Friday night's tornado. They have lived in this house since 1996. The couple was unharmed. They took shelter inside the Union City fire station before the tornado hit. (AP Photo/The Oklahoman, Jim Beckel) ( Severe Weather )
Riley Webb hands her seven month old baby Bryce Webb down to Oklahoma County Commissioner Willa Johnson after being rescued by Midwest City Fire Dept. personnel from a flooded mobile home park off of Air Depot Blvd. between NE 10th and NE 23rd St. in Midwest City, Okla, Saturday, June 1, 2013, after up to eight inches of rain fell during the previous 24 hours. (AP Photo/The Oklahoman, Paul Hellstern) ( Severe Weather )
In this April 2013 photo provided by Oklahoma State University, Team Black's airplane takes off during SpeedFest III, in Stillwater, Okla. Researchers at Oklahoma State University are designing and building sleek, Kevlar-reinforced unmanned aircraft _commonly known as drones_ to fly into the nation's worst storms and send back real-time data to first responders and forecasters about how fierce they might become. (AP Photo/ Oklahoma State University, Gary Lawson) ( Oklahoma Tornado Drones )
Men walk near OKC-West Stockyards Livestock Market, which had its roof and walls blown off by a tornado, near El Reno, Oklahoma June 1, 2013. Nine people were killed in tornadoes that swept through central Oklahoma on Friday, part of a storm system that caused widespread flooding in Oklahoma City and its suburbs, the state's chief medical examiner said on Saturday. REUTERS/Bill Waugh ( USA-TORNADOES/ )
Tornado-damaged power lines hang separated from its pole near El Reno, Oklahoma June 1, 2013. Nine people were killed in tornadoes that swept through central Oklahoma on Friday, part of a storm system that caused widespread flooding in Oklahoma City and its suburbs, the state's chief medical examiner said on Saturday. REUTERS/Bill Waugh ( USA-TORNADOES )
Cary Dehart photographs tornado damage at Canadian Valley Technology Center's Aviation Technology building in El Reno, Oklahoma June 1, 2013. Nine people were killed in tornadoes that swept through central Oklahoma on Friday, part of a storm system that caused widespread flooding in Oklahoma City and its suburbs, the state's chief medical examiner said on Saturday. REUTERS/Bill Waugh ( USA-TORNADOES/ )
A part of an RV door frame is shown stuck into the side of another RV after a tornado struck the grounds of the Oklahoma Trap and Skeet grounds near El Reno, Oklahoma, June 1, 2013. Nine people were killed in tornadoes that swept through central Oklahoma on Friday, part of a storm system that caused widespread flooding in Oklahoma City and its suburbs, the state's chief medical examiner said on Saturday. REUTERS/Bill Waugh ( USA-TORNADOES/ )
Mikie Hooper of Tuttle, Oklahoma, collects her belongings from her RV which was destroyed by a tornado in El Reno, Oklahoma, June 1, 2013. Mikie and her husband Paul were attending the Oklahoma State Trap Shoot Competition but fled home to Tuttle to escape the storm. Nine people were killed in tornadoes that swept through central Oklahoma on Friday, part of a storm system that caused widespread flooding in Oklahoma City and its suburbs, the state's chief medical examiner said on Saturday. REUTERS/Bill Waugh ( USA-TORNADOES/ )
Shelton Bryan, a chef at Gilmore's Kitchen at the OKC-West Stockyards, is framed by the kitchen pass-through window on the only kitchen wall still remaining as he checks tornado damage in El Reno, Oklahoma June 1, 2013. Nine people were killed in tornadoes that swept through central Oklahoma on Friday, part of a storm system that caused widespread flooding in Oklahoma City and its suburbs, the state's chief medical examiner said on Saturday. REUTERS/Bill Waugh ( USA-TORNADOES/ )
A distribution warehouse in the Earth City corridor was heavily damaged during a storm, Saturday, June 1, 2013 in St. Charles County, Mo. The National Weather Service confirms at least two tornados were part of the Friday night storm that raked portions of the St. Louis area, damaging hundreds of homes but causing no serious injuries. (AP Photo/St. Louis Post-Dispatch, Robert Cohen) ( Severe Weather )
EL RENO, OK - JUNE 01: Michelle Demers (L) and Amanda Demers carry a rocking chair from the damaged home of a family friend after a tornado hit on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area last night killing at least nine people, injuring many others and destroying homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169781356 )
EL RENO, OK - JUNE 01: A family loads what they have salvaged, with the help of friends, from their damaged home after a tornado hit on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area last night killing at least nine people, injuring many others and destroying homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169781355 )
EL RENO, OK - JUNE 01: Chad Beckman checks in on a steer that survived a tornado that hit a friend's home on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area killing at least nine people, injuring many others and destroying homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169770499 )
EL RENO, OK - JUNE 01: Kalia Robbins (L) hugs her great uncle Bill Thesing who was injured while in his home when a tornado hit on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area killing at least nine people, injuring many others and destroying homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169770446 )
EL RENO, OK - JUNE 01: Bill Thesing, who was injured in his home when a tornado hit, returned from the hospital to see what he could salvage from his belongings in a field on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area killing at least nine people, injuring many others and destroying homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169770443 )
EL RENO, OK - JUNE 01: William Miles looks for items to salvage from a home destroyed when a tornado hit on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area last night killing at least nine people, injuring many others and destroying homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169770398 )
EL RENO, OK - JUNE 01: Larry Corr looks for items to salvage from a home destroyed when a tornado hit on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area last night killing at least nine people, injuring many others and destroying homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169770395 )
EL RENO, OK - JUNE 01: Bill Thesing (2R), who was injured in his home when a tornado hit, returned to what was left of it from the hospital to look for some of his lost animals with (L-R) Tammy Hicks, Dylan Lager and Chad Beckman on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area killing at least nine people, injuring many others and destroying homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169770288 )
EL RENO, OK - JUNE 01: Bill Thesing (L), who was injured in his home when a tornado hit, returned to what was left of it from the hospital to salvage items as his friend Tammy Hicks helps on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area killing at least nine people, injuring many others and destroying homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169770286 )
EL RENO, OK - JUNE 01: (L-R) Josh Hill, Dylan Lager and Holly Mais carry an injured dog out of a home damaged by a passing tornado on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area killing at least nine people, injuring many others and destroying homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169770285 )
An El Reno, Okla. resident searches through the wreckage of a friend's mobile home hoping to find undamaged belongings in El Reno on Saturday June 1, 2013. (AP Photo/Nick Oxford) ( Oklahoma Tornado )
Rilma Hulett carries a dish set from her friend Bobbie Steenbergen's home that was destroyed by the tornado that swept through Central Oklahoma Friday afternoon on Saturday June 1, 2013 in El Reno Okla. Emergency officials set out Saturday morning to see how much damage a violent burst of thunderstorms and tornadoes caused as it swept across the Midwest overnight. (AP Photo/Nick Oxford) ( Severe Weather )
Josh Hill, a volunteer with Grace Chapel in Englewood, Colo., helps to clear downed branches from Angela and Wade Burleson's yard in El Reno Okla. on Saturday June 1, 2013 after their home was destroyed by one of the tornados that swept through Central Okla. on Friday. (AP Photo/Nick Oxford) ( Oklahoma Tornado )
Bobbie Steenbergen walks outside of what is left of her home that was destroyed by the tornado that swept through Central Oklahoma Friday afternoon on Saturday June 1, 2013 in El Reno Okla. Emergency officials set out Saturday morning to see how much damage a violent burst of thunderstorms and tornadoes caused as it swept across the Midwest overnight. (AP Photo/Nick Oxford) ( Severe Weather )
Bill Bradley (L), assistant superintendent of the Canadian Valley Technology Center, and Cary Dehart (R) survey tornado damage at the Canadian Valley Technology Center in El Reno, Oklahoma June 1, 2013. Tornadoes killed five people in central Oklahoma including a mother and her baby and menaced Oklahoma City and its hard-hit suburb of Moore, before the storm system tracked northeast early on Saturday. REUTERS/Bill Waugh ( USA-TORNADOES/ )
Cars and trees damaged by a tornado are seen at Canadian Valley Technology Center in El Reno, Oklahoma June 1, 2013. Tornadoes killed five people in central Oklahoma including a mother and her baby and menaced Oklahoma City and its hard-hit suburb of Moore, before the storm system tracked northeast early on Saturday. REUTERS/Bill Waugh ( USA-TORNADOES/ )
EL RENO, OK - JUNE 01: A person looks at cars damaged by a powerful tornado on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area killing at least 9 people and injuring many and destroyed homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169765645 )
EL RENO, OK - JUNE 01: People survey the damage at the at Canadian Valley Technology Center's El Reno Campus after it was hit by a powerful tornado on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area killing at least nine people, injuring many others and destroying homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169765582 )
EL RENO, OK - JUNE 01: People survey the damage at the at Canadian Valley Technology Center's El Reno Campus after it was hit by a powerful tornado on June 1, 2013 in El Reno, Oklahoma. The tornado ripped through the area killing at least nine people, injuring many others and destroying homes and buildings. (Photo by Joe Raedle/Getty Images) ( 169765577 )
A rain-wrapped tornado is seen in Meridian May 31, 2013. Violent thunderstorms on Friday produced tornadoes in central Oklahoma that killed five people including a mother and her baby and menaced Oklahoma City and its hard-hit suburb of Moore, authorities said. REUTERS/Gene Blevins ( USA-TORNADOES/ )
A mile-wide tornado is seen near El Reno, Oklahoma May 31, 2013. Five people were killed in central Oklahoma on Friday as tornadoes raced across the area, a spokeswoman for the state Office of the Chief Medical Examiner said. REUTERS/Richard Rowe ( USA-TORNADOES/ )
A tornado forms over I-40 as seen looking west from Indian Meridian Road in Midwest City, Okla. on Friday, May 31, 2013. (AP Photo/Alonzo Adams) ( Severe Weather )
Westbound traffic on I-44 at Linclon Blvd. drives through flood water on I-44 after a thunderstorm goes through Oklahoma City on Friday, May 31, 2013. (AP Photo/Alonzo Adams) ( Severe Weather )
People stop traffic to help one of several loose horses across I-40 just east of 81 in El Reno, Okla., after a tornado moved through the area on Friday, May 31, 2013. (AP Photo/The Oklahoman, Jim Beckel) ( Severe Weather )
A tornado forms near Banner Road and Praire Circle in El Reno, Okla. on Friday, May 31, 2013. (AP Photo/Alonzo Adams) ( Severe Weather )
Overturned trucks block a frontage road off I-40 just east of 81 in El Reno, Okla., after a tornado moved through the area on Friday, May 31, 2013. (AP Photo/The Oklahoman, Jim Beckel) ( Severe Weather )
A traffic light rests on the street on E K Gaylord and Reno in Oklahoma City after a storm moves through the area in Oklahoma City, Friday, May 31, 2013. (AP Photo/The Oklahoman, Bryan Terry) ( Severe Weather )
Vehicles trapped by flash flooding sit underneath I-235 at NW 23rd in Oklahoma City, Friday, May 31, 2013. Severe thunderstorms brought tornadoes, high winds, heavy rain and hail to central Oklahoma on Friday. (AP Photo/The Oklahoman, Nate Billings) ( Severe Weather )
A man stands on top of his car as it is flooded on S. May Ave near SW 25th in Oklahoma City, Friday, May 31, 2013, following flooding after a severe thunderstorm moved through Oklahoma CIty. (AP Photo/The Oklahoman, Sarah Phipps) ( Severe Weather )
A storm develops just before it produced a tornado near El Reno Okla. just south of Interstate 40 on Friday May 31, 2013. Several tornadoes in the area caused damage and injuries. (AP Photo/The World-Herald, Chris Machian) ( Severe Weather )
Cars that were damaged by a tornado in parking lot at Canadian Valley Technical Center on State Highway 66, west of Banner Road, Friday May 31, 2013 in El Reno, Okla. (AP Photo/The Oklahoman, Jim Beckel) ( Severe Weather )
A pickup truck drives through a flooded Highline Blvd just east of South Meridian Ave where several trees were also down after a tornado on the ground near El Reno Okla. just south of Interstate 40 on Friday May 31, 2013. (AP Photo/The World-Herald, Chris Machian) ( Severe Weather )
High winds snapped this power pole on from Highway 81 just south El Reno Okla. on Friday May 31, 2013. Tornadoes rolled in from the prairie and slammed Oklahoma City and its suburbs on Friday, killing a mother and baby and crumbling cars and tractor-trailers along a major interstate. (AP Photo/The World-Herald, Chris Machian) ( Severe Weather )
A home, damaged by a tornado, is seen south along Interstate-40 eastbound just east of El Reno, Oklahoma May 31, 2013. Violent thunderstorms spawned tornadoes that menaced Oklahoma City and its already hard-hit suburb of Moore on Friday, killing a mother and her baby, and officials worried that drivers stuck on freeways could be trapped in the path of dangerous twisters. One twister touched down on Interstate 40 and was headed toward Oklahoma City. REUTERS/Bill Waugh ( USA-TORNADOES/ )
Large clouds are seen as a tornado passes south of El Reno, Oklahoma May 31, 2013. Violent thunderstorms spawned tornadoes that menaced Oklahoma City and its already hard-hit suburb of Moore on Friday, killing a mother and her baby, and officials worried that drivers stuck on freeways could be trapped in the path of dangerous twisters. One twister touched down on Interstate 40 and was headed toward Oklahoma City. REUTERS/Bill Waugh ( USA-TORNADOES/ )
Oklahoma Highway Patrol Troopers look at a flipped SUV, which was blown off of Interstate-40 eastbound by a tornado, just east of El Reno, Oklahoma May 31, 2013. Violent thunderstorms spawned tornadoes that menaced Oklahoma City and its already hard-hit suburb of Moore on Friday, killing a mother and her baby, and officials worried that drivers stuck on freeways could be trapped in the path of dangerous twisters. One twister touched down on Interstate 40 and was headed toward Oklahoma City. The woman and child were traveling in the SUV when they were killed during the tornado, according to local media. REUTERS/Bill Waugh ( USA-TORNADOES/ )
Rescue personnel stand near overturned trucks in an industrial park after strong storms moved through the area Friday, May 31, 2013, in St. Louis. (AP Photo/Jeff Roberson) ( Severe Weather )
People walk near an overturned truck in an industrial park after strong storms moved through the area Friday, May 31, 2013, in St. Louis. (AP Photo/Jeff Roberson) ( Severe Weather )
Tornado debris and downed power lines are seen at Interstate-40 Westbound as traffic slowly passes in the opposite direction of Interstate-40, just east of El Reno, Oklahoma May 31, 2013. Violent thunderstorms spawned tornadoes that menaced Oklahoma City and its already hard-hit suburb of Moore on Friday, killing a mother and her baby, and officials worried that drivers stuck on freeways could be trapped in the path of dangerous twisters. One twister touched down on Interstate 40 and was headed toward Oklahoma City. REUTERS/Bill Waugh ( USA-TORNADOES/ )
Tornado debris and a damaged building in the background are seen along Interstate-40 Westbound, just east of El Reno, Oklahoma May 31, 2013. Violent thunderstorms spawned tornadoes that menaced Oklahoma City and its already hard-hit suburb of Moore on Friday, killing a mother and her baby, and officials worried that drivers stuck on freeways could be trapped in the path of dangerous twisters. One twister touched down on Interstate 40 and was headed toward Oklahoma City. REUTERS/Bill Waugh ( USA-TORNADOES/ )
A pickup passes by tornado debris in the Westbound lane of Interstate-40, just east of El Reno, Oklahoma May 31, 2013. Violent thunderstorms spawned tornadoes that menaced Oklahoma City and its already hard-hit suburb of Moore on Friday, killing a mother and her baby, and officials worried that drivers stuck on freeways could be trapped in the path of dangerous twisters. One twister touched down on Interstate 40 and was headed toward Oklahoma City. REUTERS/Bill Waugh ( USA-TORNADOES/ )
Tornado debris hangs from a billboard sign, which was destroyed along Interstate-40 Westbound, as traffic passes slowly just east of El Reno, Oklahoma May 31, 2013. Violent thunderstorms spawned tornadoes that menaced Oklahoma City and its already hard-hit suburb of Moore on Friday, killing a mother and her baby, and officials worried that drivers stuck on freeways could be trapped in the path of dangerous twisters. One twister touched down on Interstate 40 and was headed toward Oklahoma City. REUTERS/Bill Waugh ( USA-TORNADOES/ )
Vehicles slowly pass by a semi tractor-trailer, which was blown off the highway by a tornado, in the Eastbound lane of Interstate-40 just east of El Reno, Oklahoma May 31, 2013. Violent thunderstorms spawned tornadoes that menaced Oklahoma City and its already hard-hit suburb of Moore on Friday, killing a mother and her baby, and officials worried that drivers stuck on freeways could be trapped in the path of dangerous twisters. One twister touched down on Interstate 40 and was headed toward Oklahoma City. REUTERS/Bill Waugh ( USA-TORNADOES/ )
A tornado touches down near El Reno, Okla., Friday, May 31, 2013, causing damage to structures and injuring travelers on Interstate 40. I-40 has been closed after severe weather rolled through the area. (AP Photo/Omaha World-Herald, Chris Machian) ( APTOPIX Severe Weather )
A rainbow can be seen north of El Reno, OK near U.S. Highway 81 after a tornado touched down near El Reno, Okla., Friday, May 31, 2013, causing damage to structures and injuring travelers on Interstate 40. I-40 has been closed after severe weather rolled through the area. (AP Photo/Omaha World-Herald, Chris Machian) ( Severe Weather )
A large storm cell, which reportedly produced a multiple vortex tornado, passes south of El Reno, Oklahoma May 31, 2013. The National Weather Service issued a tornado emergency for parts of Oklahoma on Friday, describing weather conditions as "particularly dangerous" a day after more than a dozen reported twisters ripped through the region. REUTERS/Bill Waugh ( USA-TORNADOES/ )
An overturned semitrailer rests on its side on the eastbound lanes of Interstate 40, just east of El Reno, Okla., after a reported tornado touched down, Friday, May 31, 2013. (AP Photo/The Omaha World-Herald, Chris Machian) ( Severe Weather )
Parts of Oklahoma City experience extreme flooding after multiple tornado's passed through Central Okla. on Friday May 31, 2013 in Oklahoma City. A violent storm formed over the prairie west of Oklahoma City late Friday afternoon, dropped a tornado in a suburb and rolled into the state capital as viewers brave enough to remain above ground watched on statewide television. (AP Photo/Nick Oxford) ( Severe Weather )
A tornado touches down near El Reno, Okla., Friday, May 31, 2013, causing damage to structures and injuring travelers on Interstate 40. I-40 has been closed after severe weather rolled through the area. (AP Photo/The Omaha World-Herald, Chris Machian) ( APTOPIX Severe Weather )