Tornadoes ravage Plains

MOORE, OK - MAY 27: (L-R) Volunteers Jaqi Castro, Angelica Morris-Smith and Cetoria Petties walk through a tornado ravaged neighborhood handing out supplies to residents and volunteers on May 27, 2013 in Moore, Oklahoma. Residents and volunteers observed the Memorial Day holiday by continuing to recover valuables from the destroyed neighborhoods one week after a massive tornado hit the area. The tornado of EF5 strength and two miles wide touched down May 20 killing at least 24 people and leaving behind extensive damage to homes and businesses. U.S. President Barack Obama promised federal aid to supplement state and local recovery efforts. (Photo by Tom Pennington/Getty Images)

Lights shine on the tops of crosses making up a memorial outside the Plaza Towers elementary school where seven children died and several students and teachers were injured by the May 20 afternoon tornado in Moore, Oklahoma May 26, 2013. The tornado was the strongest in the United States in nearly two years and cut a path of destruction 17 miles (27 km) long and 1.3 (2 km) miles wide. REUTERS/Lucas Jackson (UNITED STATES - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY)

Volunteers pray at a makeshift memorial outside Plaza Towers Elementary School Sunday, May 26, 2013, in Moore, Okla. Cleanup continues after a huge tornado roared through the Oklahoma City suburb Monday, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)

MOORE, OK - MAY 26: A general view of a tornado ravaged neighborhood ahead of a U.S. President Barack Obama's visit to the area on May 26, 2013 in Moore, Oklahoma. The tornado of EF5 strength and two miles wide touched down May 20 killing at least 24 people and leaving behind extensive damage to homes and businesses. U.S. President Barack Obama promised federal aid to supplement state and local recovery efforts. (Photo by Tom Pennington/Getty Images) *** BESTPIX ***

US President Barack Obama is greeted as he tours a tornado affected area on May 26, 2013 in Moore, Oklahoma. Obama is in the Oklahoma City area to survey damage from the tornado which struck a week ago and meet with victims and first responders. AFP PHOTO/Mandel NGANMANDEL NGAN/AFP/Getty Images

Jennifer Doan, left, is embraced by her fiance, Nyle Rogers, right, during a memorial service at the First Baptist Church in Moore, Okla., Sunday, May 26, 2013. Doan, a teacher at Plaza Towers elementary school, was trapped under the rubble after the Moore tornado. (AP Photo/Sue Ogrocki, Pool)

MOORE, OK - MAY 25: Deana Sanderson (L) and Timothy Gansman embrace as they view a memorial in front of the destroyed Plaza Towers Elementary School where seven children lost their lives during Monday's tornado on May 25, 2013 in Moore, Oklahoma. A two-mile wide EF5 tornado touched down in Moore May 20 killing at least 24 people and leaving behind extensive damage to homes and businesses. U.S. President Barack Obama promised federal aid to supplement state and local recovery efforts. (Photo by Scott Olson/Getty Images)

Two boys work to remove debris from a field near the Orr Family Farm in Oklahoma City, Oklahoma, May 25, 2013. The tornado was the strongest in the United States in nearly two years and cut a path of destruction 17 miles (27 km) long and 1.3 (2 km) miles wide. Storm experts said it was remarkable that only 24 people were killed, as tornadoes of this strength can blow away a well constructed brick or wood house. REUTERS/Lucas Jackson (UNITED STATES - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY)

MOORE, OK - MAY 25: Mike Hitch prepares to tow a classic Corvette which was pulled from under debris of a home destroyed by Monday's tornado on May 25, 2013 in Moore, Oklahoma. The car will be sold at auction to help the insurance company recover some of the loss. A two-mile wide EF5 tornado touched down in Moore May 20 killing at least 24 people and leaving behind extensive damage to homes and businesses. U.S. President Barack Obama promised federal aid to supplement state and local recovery efforts. (Photo by Scott Olson/Getty Images)

MOORE, OK - MAY 25: A group of volunteers from Texas make their way through a tornado ravaged neighborhood while helping residents clean up May 25, 2013 in Moore, Oklahoma. The tornado of EF5 strength and two miles wide touched down May 20 killing at least 24 people and leaving behind extensive damage to homes and businesses. U.S. President Barack Obama promised federal aid to supplement state and local recovery efforts. (Photo by Tom Pennington/Getty Images)

Southmoore High School senior Jake Spradling, hugs a classmate as they get ready to attend their commencement ceremony in Oklahoma City Saturday, May 25, 2013, five days after a tornado destroyed a large swath of their attendance area in Moore, Okla. Spradling's home was among those destroyed after a huge tornado roared through the Oklahoma City suburb Monday, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)

Thomas Alford (R) and his son Thomas Alford Jr. help Sheri Cushman look through her family's home several days after it had been destroyed by a tornado in Moore, Oklahoma, May 24, 2013. The tornado was the strongest in the United States in nearly two years and cut a path of destruction 17 miles (27 km) long and 1.3 (2 km) miles wide. Storm experts said it was remarkable that only 24 people were killed, as tornadoes of this strength can blow away a well constructed brick or wood house. REUTERS/Lucas Jackson (UNITED STATES - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY)

TOPSHOTS Volunteers help a home owner to dry his clothing at a tornado-devastated home in Moore, Oklahoma, on May 24, 2013. The tornado, one of the most powerful in recent years, killed 24 people, injured 377, damaged or destroyed 1,200 homes and affected an estimated 33,000 people in this Oklahoma City suburb, officials said in their latest update. Initial damages have been estimated at around $2 billion. AFP PHOTO/Jewel SamadJEWEL SAMAD/AFP/Getty Images

MOORE, OK - MAY 24: Jessica Fowler digs through the remains of her destroyed bedroom on May 24, 2013 in Moore, Oklahoma. The tornado of EF5 strength and two miles wide touched down May 20 killing at least 24 people and leaving behind extensive damage to homes and businesses. U.S. President Barack Obama promised federal aid to supplement state and local recovery efforts. (Photo by Tom Pennington/Getty Images)

Lightning from a thunderstorm strikes amid the wreckage of twisted cars and structures at Plaza Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP Photo/Brennan Linsley)

TOPSHOTS A woman searches for salvageable belongings at a tornado-devastated home on May 22, 2013 in Moore, Oklahoma. As rescue efforts in Oklahoma wound down, residents turned to the daunting task of rebuilding a US heartland community shattered by a vast tornado that killed at least 24 people. The epic twister, two miles (three kilometers) across, flattened block after block of homes as it struck mid-afternoon on May 20, hurling cars through the air, downing power lines and setting off localized fires in a 45-minute rampage. AFP PHOTO/Jewel SamadJEWEL SAMAD/AFP/Getty Images

TOPSHOTS Tornado survivor Arlisha Hall holds her 2-month-old daughter Akai Hall as she along with her husband Wyatt Hall walk back to their home on May 22, 2013 in Moore, Oklahoma. As rescue efforts in Oklahoma wound down, residents turned to the daunting task of rebuilding a US heartland community shattered by a vast tornado that killed at least 24 people. The epic twister, two miles (three kilometers) across, flattened block after block of homes as it struck mid-afternoon on May 20, hurling cars through the air, downing power lines and setting off localized fires in a 45-minute rampage. AFP PHOTO/Jewel SamadJEWEL SAMAD/AFP/Getty Images

This handout photo taken and released by EADS' Astrium on May 23, 2013, shows two satellite views of Moore, Oklahoma, before (Top) and after (Bottom) the passage of a powerful tornado, classified as an EF4, which passed through the town on May 20, destroying homes, schools and businesses and killing 24 people including children. The epic twister, two miles (three kilometers) across, flattened block after block of homes as it struck mid-afternoon, hurling cars through the air, downing power lines and setting off localized fires in a 45-minute rampage. AFP PHOTO / EADS / ASTRIUM SERVICES 2013 ---RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT \"AFP PHOTO / EADS / ASTRIUM SERVICES 2013 \" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS---HANDOUT/AFP/Getty Images

epa03712598 Christine Jones (L) and her daughter Ashley (R) embrace while standing in front of their destroyed home two days after a killer tornado hit in Moore, Oklahoma, USA, 22 May 2013. The storm, estimated to contain winds up to 200 miles per hour (322 Kph), flattened homes and schools, killed at least 24 people including nine children and injured others 20 May 2013. EPA/TANNEN MAURY

MOORE, OK - MAY 22: John Wilson surveys the neighborhood from atop the rubble that was once a home that his son and ex-wife shared before the home and the neighborhood were destroyed by a tornado that ripped through the area on May 22, 2013 in Moore, Oklahoma. The tornado of at least EF4 strength and two miles wide touched down May 20 killing at least 24 people and leaving behind extensive damage to homes and businesses. U.S. President Barack Obama promised federal aid to supplement state and local recovery efforts. (Photo by Scott Olson/Getty Images)

MOORE, OK - MAY 22: (L-R) Thomas Trowbridge along with wife Kelcy and her mother Cindy Moore salvage items from Trowbridge's house destroyed by the tornado May 22, 2013 in Moore, Oklahoma. The two-mile-wide Category 5 tornado touched down May 20 killing at least 24 people and leaving behind extensive damage to homes and businesses. U.S. President Barack Obama promised federal aid to supplement state and local recovery efforts. (Photo by Brett Deering/Getty Images)

MOORE, OK - MAY 22: Dean Dye looks over a storm shelter in a home that was destroyed by a tornado on May 22, 2013 in Moore, Oklahoma. The shelter is across the street from Dye's daughter's home which was also damaged by the tornado. The tornado of at least EF4 strength and two miles wide touched down May 20 killing at least 24 people and leaving behind extensive damage to homes and businesses. U.S. President Barack Obama promised federal aid to supplement state and local recovery efforts. (Photo by Scott Olson/Getty Images)

epa03712594 Three men push over what remains of a chimney in a destroyed home two days after a killer tornado hit in Moore, Oklahoma, USA, 22 May 2013. The storm, estimated to contain winds up to 200 miles per hour (322 Kph), flattened homes and schools, killed at least 24 people, nine of them children, and injured others 20 May 2013. EPA/TANNEN MAURY

Joe Bell recovers a mixer in his kitchen in his tornado-destroyed house in Oklahoma City, Oklahoma May 22, 2013. Rescue workers with sniffer dogs picked through the ruins on Wednesday to ensure no survivors remained buried after a deadly tornado left thousands homeless and trying to salvage what was left of their belongings. REUTERS/Rick Wilking (UNITED STATES - Tags: DISASTER ENVIRONMENT)

Tornado victim Todd (who only gave one name) looks through a pile of clothing at a road side relief camp on May 22, 2013 in Moore, Oklahoma. As rescue efforts in Oklahoma wound down, residents turned to the daunting task of rebuilding a US heartland community shattered by a vast tornado that killed at least 24 people. The epic twister, two miles (three kilometers) across, flattened block after block of homes as it struck mid-afternoon on May 20, hurling cars through the air, downing power lines and setting off localized fires in a 45-minute rampage.AFP PHOTO/Jewel SamadJEWEL SAMAD/AFP/Getty Images

A sign reads \"God Bless Moore\" as workers make repairs to the Warren theatre after the Oklahoma City suburb of Moore, Oklahoma which was left devastated by a tornado, May 22, 2013. Rescue workers with sniffer dogs and searchlights picked through the wreckage of a massive tornado to ensure no survivors remained buried in the rubble of primary schools, houses and buildings in an Oklahoma City suburb. The massive tornado on Monday afternoon flattened entire blocks of the town, killed at least 24 people and injured about 240 in Moore, Oklahoma. REUTERS/Adrees Latif (UNITED STATES - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY)

epa03711947 Volunteers fill boxes with nonperishables food items at the Feed the Children distribution center in Oklahoma City, Oklahoma, USA, 22 May 2013. The boxes will be given to various non-profits to help the Moore, Oklahoma tornado victims. The town was hit by a tornado on 20 May killing at least 24 people including seven children in one school. EPA/ED ZURGA

A woman searches for possessions at sunset after the suburb of Moore, Oklahoma was left devastated by a tornado, May 21, 2013. Rescuers went building to building in search of victims and survivors picked through the rubble of their shattered homes on Tuesday, a day after a massive tornado tore through the Oklahoma City suburb of Moore, wiping out blocks of houses and killing at least 24 people. REUTERS/Adrees Latif (UNITED STATES - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY)

Standy Stewart, right, and her pregnant daughter-in-law Robyn Rojas have their dinner at what is left of their home on May 21, in Moore, Okla.

Danielle Stephan holds boyfriend Thomas Layton as they pause between salvaging the remains of a family member's home one day after a tornado devastated the town Moore, Okla., on May 21. Rescuers went building to building in search of victims and thousands of survivors were homeless on Tuesday after a massive tornado tore through the Oklahoma City suburb of Moore, wiping out whole blocks of homes and killing at least 24 people.

MOORE, OK - MAY 21: An aerial view of destroyed houses and buildings after a powerful tornado ripped through the area on May 21, 2013 in Moore, Oklahoma. The town reported a tornado of at least EF4 strength and two miles wide that touched down yesterday killing at least 24 people and leveling everything in its path. U.S. President Barack Obama promised federal aid to supplement state and local recovery efforts. (Photo by Benjamin Krain/Getty Images)

June Simson (R) receives a hug from her neighbor Jo McGee while embracing her cat Sammi after she found him standing on the rubble of her destroyed home on May 21, 2013 in Moore, Oklahoma. Families returned to a blasted moonscape that had been an American suburb Tuesday after a monstrous tornado tore through the outskirts of Oklahoma City, killing at least 24 people. Nine children were among the dead and entire neighborhoods vanished, with often the foundations being the only thing left of what used to be houses and cars tossed like toys and heaped in big piles. AFP PHOTO/Joshua LOTTJoshua LOTT/AFP/Getty Images

Police stand beside two men sitting handcuffed on the street whom they have detained on suspicion of looting in Moore, Okla., on May 21. Rescuers went building to building in search of victims and thousands of survivors were homeless on Tuesday after a massive tornado tore through the Oklahoma City suburb of Moore, wiping out whole blocks of homes and killing at least 24 people.

Utility workers raise cable as they try to restore power to a section of town the day after a killer tornado hit in Moore, Okla., on May 21.

A woman and young boy walk along a street as they view destroyed house on May 21, in Moore, Okla.

A man salvages stuff from what is left of a bedroom of his home on May 21, in Moore, Okla.

Two frightened and apparently lost dogs sit on a coffee table top in a destroyed neighborhood in Moore, Okla., May 21.

A chair sits against a bare tree next to a destroyed home on May 21, in Moore, Okla.

An aerial view of an entire neighborhood destroyed by Monday's tornado is shown Tuesday, May 21, 2013, in Moore, Okla. At least 24 people, including nine children, were killed in the massive tornado that flattened homes and a school in Moore, on Monday afternoon. (AP Photo/Tony Gutierrez)

epa03710358 US Air Force Airman First Class Justin Acord sifts through the rubble of his father-in-law's home in Moore, Oklahoma, USA, 21 May 2013. The town was hit by a tornado on 20 May killing at least 24 people including seven children in one school. EPA/TANNEN MAURY

Destroyed vehicles lie in the rubble outside the Plaza Towers Elementary school in Moore, Oklahoma May 21, 2013 after the school was destroyed by a massive tornado May 20. Emergency workers pulled more than 100 survivors from the rubble of homes, schools and a hospital in an Oklahoma town hit by a powerful tornado, and officials lowered the death toll from the storm to 24, including nine children. REUTERS/Richard Rowe (UNITED STATES - Tags: DISASTER ENVIRONMENT)

An aerial view shows homes damaged by Monday's tornado as others appear untouched, Tuesday, May 21, 2013, in Moore, Okla. At least 24 people, including nine children, were killed in the massive tornado that flattened homes and a school in Moore, on Monday afternoon. (AP Photo/Tony Gutierrez)

Lea Bessinger salvages a picture of Jesus as she and her son Josh Bessinger sort through the rubble of the elder Bessinger's tornado-ravaged home Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening an entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Charlie Riedel)

Austin Brock holds cat Tutti, shortly after the animal was retrieved from the rubble of Brock's home, which was demolished a day earlier when a tornado moved through Moore, Okla., Tuesday, May 21, 2013. A huge tornado roared through the Oklahoma City suburb Monday, flattening an entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Brennan Linsley)

An aerial view shows Tower Plazas Elementary school in Moore, Okla., Tuesday, May 21, 2013 as rescue workers make their way through the structure. At least 24 people, including nine children, were killed in the massive tornado that flattened homes and a school in Moore, on Monday afternoon. (AP Photo/Tony Gutierrez)

epa03710294 A girl rides her bike through the street of a neighborhood destroyed the day after a killer tornado hit in Moore, Oklahoma, USA 21 May 2013. The storm, estimated to contain winds up to 200 miles per hour (322 Kph), flattened homes and schools, killed dozens of people and injured many others 20 May 2013. A previous storm on 04 May 1999 in Moore caused similar damage and loss of life. EPA/ED ZURGA

AT&T employees sort through tangled phone lines as they clean up in a tornado-ravaged neighborhood Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Charlie Riedel)

epa03710394 People recover belongings from the rubble of a home in Moore, Oklahoma, USA, 21 May 2013. The town was hit by a tornado on 20 May killing at least 24 people including seven children in one school. EPA/TANNEN MAURY

epa03709961 A mangled highway sign rises along Interstate 35 as traffic slowly move along the stretch the day after a tornado hit in Moore, Oklahoma, USA, 21 May 2013. US President Barack Obama declared a major disaster in Oklahoma after a powerful tornado tore through parts of the state, killing 91 people, US media reported. EPA/ED ZURGA

epa03709826 A handout picture provided by the Oklahoma National Guard on 21 May 2013 shows Oklahoma National Guard soldiers and airmen working with emergency crews as they look for survivors from a devastating tornado that ripped through Moore, Oklahoma, 20 May 2013. US President Barack Obama declared a major disaster in Oklahoma after a powerful tornado tore through parts of the state, killing 91 people, US media reported. EPA/OKLAHOMA NATIONAL GUARD / HO HANDOUT EDITORIAL USE ONLY

A man and two children walk through debris after a huge tornado struck Moore, Oklahoma, near Oklahoma City, May 20, 2013. A massive tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people as winds of up to 200 miles per hour (320 kph) flattened entire tracts of homes, two schools and a hospital, leaving a wake of tangled wreckage. REUTERS/Richard Rowe (UNITED STATES - Tags: DISASTER ENVIRONMENT)

Cindy Wilson texts to friends after her home was destroyed in the afternoon tornado. Cindy and her husband, Staff Sgt. B. Wilson, took cover in their home's bathtub when the tornado hit. Cindy received a deep gash to her forehead and her wound was treated by first responders at the scene. Tornado caused extensive damage in the Madison Place Addition, near SE 8 and Tower in Moore, on Monday, May 20, 2013. (AP Photo/ The Oklahoman, Jim Beckel)

A child calls to his father after being pulled from the rubble of the Tower Plaza Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on the elementary school. (AP Photo/Sue Ogrocki)

This aerial photo shows damage to buildings hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)

Teachers carry children away from Briarwood Elementary school in Moore, Okla., after a tornado destroyed the school on May 20.

Children wait for their parents to arrive at Briarwood Elementary school after a tornado destroyed the school in south OKC Oklahoma City, OK, Monday, May 20, 2013. Near SW 149th and Hudson.

A fire chief coordinates rescue workers at Briarwood Elementary school after a tornado destroyed the school in south OKC Oklahoma City, OK, Monday, May 20, 2013. Near SW 149th and Hudson.

Two girls stand in rubble after a tornado struck Moore, Oklahoma, May 20, 2013. A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble. REUTERS/Gene Blevins (UNITED STATES - Tags: ENVIRONMENT DISASTER TPX IMAGES OF THE DAY)

A teacher hugs a child at Briarwood Elementary school after a tornado destroyed the school in south Oklahoma City, OK, Monday, May 20, 2013. Near SW 149th and Hudson

A man looks through the remains of a home after a huge tornado struck Moore, Oklahoma, near Oklahoma City, May 20, 2013. A massive tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people as winds of up to 200 miles per hour (320 kph) flattened entire tracts of homes, two schools and a hospital, leaving a wake of tangled wreckage. REUTERS/Richard Rowe (UNITED STATES - Tags: DISASTER ENVIRONMENT)

Gene Tripp sits in his rocking chair where his home once stood after being destroyed by a tornado hit the area near 149th and Drexel on Monday, May 20, 2013 in Oklahoma City, Okla. (AP Photo/ The Oklahoman, Chris Landsberger)

This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)

A couple searches for belongings after a tornado struck Moore, Oklahoma, May 20, 2013. A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble. REUTERS/Gene Blevins (UNITED STATES - Tags: ENVIRONMENT DISASTER)

A man and a woman assist a state trooper carry a large tarp to cover a tornado victim found in a field across the street from the Madison Place Addition, near SE 8 and Tower in Moore, on Monday, May 20, 2013. (AP Photo/ The Oklahoman, Jim Beckel)

Rebekah Stuck hugs her son, Aiden Stuck, 7, after she found him in front of the destroyed Briarwood Elementary after a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. Aiden Stuck was inside the school when it was hit. (AP Photo/ The Oklahoman, Nate Billings)

This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)

A woman walks through debris after a huge tornado struck Moore, Oklahoma, near Oklahoma City, May 20, 2013. A massive tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people as winds of up to 200 miles per hour (320 kph) flattened entire tracts of homes, two schools and a hospital, leaving a wake of tangled wreckage. REUTERS/Richard Rowe (UNITED STATES - Tags: DISASTER ENVIRONMENT)

Two men attempt to pry open a door on this car to check for victims in a business parking lot west of I-35 south of 4th Street in Moore, on Monday, May 20, 2013.A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/The Oklahoman, Jim Beckel)

A man looks at a boulder that hit a car after a tornado struck Moore, Oklahoma, May 20, 2013. A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble. REUTERS/Gene Blevins (UNITED STATES - Tags: ENVIRONMENT DISASTER)

A woman carries her child through a field near the collapsed Plaza Towers Elementary School in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo Sue Ogrocki)

Rescue workers help free one of the 15 people that were trapped at a medical building at the Moore hospital complex after a tornado tore through the area of Moore, Oklahoma May 20, 2013. REUTERS/Gene Blevins (UNITED STATES - Tags: ENVIRONMENT DISASTER TPX IMAGES OF THE DAY)

Rescue workers help free one of the 15 people that were trap at a medical building at the Moore hospital complex after a tornado tore through the area of Moore, Oklahoma May 20, 2013. REUTERS/Gene Blevins (UNITED STATES - Tags: ENVIRONMENT DISASTER)

Rescue workers dig through the rubble of a collapsed wall at the Plaza Tower Elementary School to free trapped students in Moore, Okla., following a tornado Monday, May 20, 2013. (AP Photo Sue Ogrocki)

A child is pulled from the rubble of the Plaza Towers Elementary School in Moore, Okla., and passed along to rescuers Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.(AP Photo Sue Ogrocki)

A boy is pulled from beneath a collapsed wall at the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometer) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on the elementary school. (AP Photo Sue Ogrocki)

Injured horses huddle together after the tornado hit the area near 149th and Drexel on Monday, May 20, 2013 in Oklahoma City, Okla. (AP Photo/ The Oklahoman, Chris Landsberger)

A fire burns in the Tower Plaza Addition in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo Sue Ogrocki)

This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)

Jerry Dirks, at right, hugs her friend Earlene Langley after a tornado hit Dirks' home just south of Carney Okla., on Sunday, May 19, 2013. Dirks was in her cellar at the time the tornado hit. Photo by Bryan Terry, The Oklahoman

Maeghan Hadley, of One Day Ranch pet rescue, checks over a kitten pulled from under the rubble of a mobile home destroyed by Sunday's tornado in the Steelman Estates Mobile Home Park, near Shawnee, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)

Lightning from a tornadic thunderstorm passing over Clearwater, Kansas strikes at an open field May 19, 2013. A massive storm front swept north through the central United States on Sunday, hammering the region with fist-sized hail, blinding rain and tornadoes, including a half-mile wide twister that struck near Oklahoma City. News reports said at least one person had died. REUTERS/Gene Blevins (UNITED STATES - Tags: DISASTER ENVIRONMENT)

Residents walk down a street in Carney, Okla., after a tornado swept through the area on Sunday, May 19, 2013. Photo by Bryan Terry, The Oklahoman

Wesley Little looks through the large opening in the roof of his home's family room after a tornado hit the area. Little and his wife, Barbara, have lived in this him e for 25 years. Wesley and Barbara took shelter in their home's basement with 6 other people, including his mother, Emma McAdams, and four dogs. A tornado caused extensive damage along I-40 at the junction with US 177 on the west side of Shawnee Sunday evening, May 19, 2013. Photo by Jim Beckel, The Oklahoman.

May 19, 2013 - Viola, Kansas, U.S. - A tornado touches down southwest of Wichita near the town of Viola on Sunday. The tornado was part of a line of storms that passed through the Central Plains states. (Credit Image: © Travis Heying/MCT/ZUMAPRESS.com)

Allen Cook talks on his cell phone as he stands next to a downed tree which missed falling on a home in a mobile home park, where several other homes were destroyed by a tornado on Sunday, west of Shawnee, Oklahoma May 19, 2013. A tornado half a mile wide struck near Oklahoma City on Sunday, part of a massive storm front that hammered the central United States. News reports said at least one person had died. REUTERS/Bill Waugh (UNITED STATES - Tags: DISASTER ENVIRONMENT)

The funnel of a tornadic thunderstorm almost touches the ground near South Haven, in Kansas May 19, 2013. A massive storm front swept north through the central United States on Sunday, hammering the region with fist-sized hail, blinding rain and tornadoes, including a half-mile wide twister that struck near Oklahoma City. News reports said at least one person had died. REUTERS/Gene Blevins (UNITED STATES - Tags: DISASTER ENVIRONMENT)

Debris is seen at a mobile home park which was destroyed by a tornado on Sunday, west of Shawnee, Oklahoma May 19, 2013. A tornado half a mile wide struck near Oklahoma City on Sunday, part of a massive storm front that hammered the central United States. News reports said at least one person had died. REUTERS/Bill Waugh (UNITED STATES - Tags: DISASTER ENVIRONMENT)

A tornado caused extensive damage along I-40 at the junction with US 177 on the west side of Shawnee Sunday evening, May 19, 2013. Photo by Jim Beckel, The Oklahoman.