Joplin tornado

A destroyed helicopter lies on its side in the parking lot of the Joplin Regional Medical Center in Joplin, Mo., Sunday, May 22, 2011. A large tornado moved through much of the city, damaging the hospital and hundreds of homes and businesses. (AP Photo/Mark Schiefelbein)

A man walks past destroyed vehicles in the parking lot of the Joplin Regional Medical Center in Joplin, Mo., Sunday, May 22, 2011. A large tornado moved through much of the city, damaging the hospital and hundreds of homes and businesses. (AP Photo/Mark Schiefelbein)

Residents begin digging through the rubble of their home after it was destroyed by a tornado that hit Joplin, Mo. on Sunday evening, May 22, 2011. The tornado tore a path a mile wide and four miles long destroying homes and businesses. (AP Photo/Mike Gullett)

A man carries a young girl who was rescued after being trapped with her mother in their home after a tornado hit Joplin, Mo. on Sunday evening, May 22, 2011. The tornado tore a path a mile wide and four miles long destroying homes and businesses. (AP Photo/Mike Gullett)

Emergency workers wait for a medical team after finding a body in a tornado ravaged car in Joplin, Mo., Monday, May 23, 2011. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses. (AP Photo/Charlie Riedel)

People walk down a street lined with destroyed homes in Joplin, Mo., Sunday, May 22, 2011. A large tornado moved through much of the city, damaging a hospital and hundreds of homes and businesses. (AP Photo/Mark Schiefelbein)

Emergency personnel walk through a neighborhood severely damaged by a tornado near the Joplin Regional Medical Center in Joplin, Mo., Sunday, May 22, 2011. A large tornado moved through much of the city, damaging a hospital and hundreds of homes and businesses. (AP Photo/Mark Schiefelbein)

Emergency workers wait for a medical team after finding a body in a tornado ravaged car in Joplin, Mo., Monday, May 23, 2011. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses. (AP Photo/Charlie Riedel)

Emergency personnel walk through a neighborhood severely damaged by a tornado near the Joplin Regional Medical Center in Joplin, Mo., Sunday, May 22, 2011. A large tornado moved through much of the city, damaging a hospital and hundreds of homes and businesses. (AP Photo/Mark Schiefelbein)

An emergency worker searches a Walmart store that was severely damaged by a tornado in Joplin, Mo., Sunday, May 22, 2011. A large tornado moved through much of the city, damaging a hospital and hundreds of homes and businesses. (AP Photo/Charlie Riedel)

Damaged vehicles litter the parking lot of St. John's Hospital in Joplin, Mo, after a tornado hit the southwest Missouri city on Sunday evening, May 22, 2011. A massive tornado blasted its way across southwestern Missouri on Sunday, flattening several blocks of homes and businesses in Joplin and leaving residents frantically scrambling through the wreckage. (AP Photo/Mike Gullett)

A man carries a young boy who was rescued after being trapped in his home after a tornado hit Joplin, Mo. on Sunday evening, May 22, 2011. The tornado tore a path a mile wide and four miles long destroying homes and businesses. (AP Photo/Mike Gullett)

An emergency worker searches a Walmart store that was severely damaged by a tornado in Joplin, Mo., Monday, May 23, 2011. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses. (AP Photo/Charlie Riedel)

Rescuers and neighbors look through the the wreckage of destroyed homes on a hillside in Joplin, Mo., Sunday, May 22, 2011. A large tornado moved through much of the city, damaging a hospital and hundreds of homes and businesses. (AP Photo/Mark Schiefelbein)

Pepsi Cola employee Mark Johnson looks at the wreckage of the Pepsi Cola Bottling Plant that was destroyed by a tornado in Joplin, Mo., Sunday, May 22, 2011. A large tornado moved through much of the city, damaging a hospital and hundreds of homes and businesses. (AP Photo/Charlie Riedel)

Pepsi Cola employee Mark Johnson looks at the wreckage of the Pepsi Cola Bottling Plant that was destroyed by a tornado in Joplin, Mo., Sunday, May 22, 2011. A large tornado moved through much of the city, damaging a hospital and hundreds of homes and businesses. (AP Photo/Charlie Riedel)

Hospital workers walk away from the Joplin Regional Medical Center in Joplin, Mo., Sunday, May 22, 2011. A large tornado moved through much of the city, damaging the hospital and hundreds of homes and businesses. (AP Photo/Mark Schiefelbein)

Residents of Joplin, Mo, walk west on 26th Street near Maiden Lane after a tornado hit the southwest Missouri city on Sunday evening, May 22, 2011. The tornado tore a path a mile wide and four miles long destroying homes and businesses. (AP Photo/Mike Gullett)

Volunteers and firefighters from Grove Township, Kan., look through the wreckage of a destroyed homes in Joplin, Mo., Sunday, May 22, 2011. A large tornado moved through much of the city, damaging a hospital and hundreds of homes and businesses. (AP Photo/Mark Schiefelbein)

William Jackson, left, and Ashley Martin, volunteer firefighters from Oklahoma, survey the wreckage of destroyed homes in Joplin, Mo., Sunday, May 22, 2011. A large tornado moved through much of the city, damaging a hospital and hundreds of homes and businesses. (AP Photo/Mark Schiefelbein)

Trenton Barwick surveys damage in a devastated Joplin, Mo. neighborhood, Monday, May 23, 2011. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

Nurse Susan Dillard, in white, hands off medical records to fellow nurse Holly Ansley as they sift through the rubble of their employer, Access Home Health, in Joplin, Mo., Monday, May 23, 2011. A destructive tornado moved through the city on Sunday evening, killing at least 89 people and injuring hundreds more. (AP Photo/Mark Schiefelbein)

A firefighter walks along a street as he conducts search and rescue operations in a neighborhood that was severely damaged by a tornado in Joplin, Mo., Monday, May 23, 2011. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

Fire chief Mike McLeod, left, and firefighter Kyle Newport of the Arma, Kan., fire department look through the wreckage of a business in Joplin, Mo., Monday, May 23, 2011. A destructive tornado moved through the city on Sunday evening, killing at least 89 people and injuring hundreds more. (AP Photo/Mark Schiefelbein)

Jean Logan reacts as she sees the damage to her home in Joplin, Mo., Monday, May 23, 2011 after it was damaged by a tornado that destroyed nearly 30 percent of the town on Sunday afternoon. Logan and her granddaughter rode out the storm in the laundry room. The twister cut a six-mile path through the city. (AP Photo/Tulsa World, Adam Wisneski)

This frame grab from video shows lightning inside a massive tornado on Sunday, May 22, 2011, outside Joplin, Mo. The tornado tore a 6-mile path across southwestern Missouri killing at least 89 people as it slammed into the city of Joplin, ripping into a hospital, crushing cars like soda cans and leaving a forest of splintered tree trunks behind where entire neighborhoods once stood. (AP Photo/tornadovideo.net)

Search-and-rescue volunteers walk through the wreckage of a destroyed neighborhood in Joplin, Mo., Monday, May 23, 2011. A destructive tornado moved through the city on Sunday evening, killing at least 89 people and injuring hundreds more. (AP Photo/Mark Schiefelbein)

This frame grab from video shows a massive tornado on Sunday, May 22, 2011, outside Joplin, Mo. The tornado tore a 6-mile path across southwestern Missouri killing at least 89 people as it slammed into the city of Joplin, ripping into a hospital, crushing cars like soda cans and leaving a forest of splintered tree trunks behind where entire neighborhoods once stood. (AP Photo/tornadovideo.net)

Glenda Clary salvages work clothes, Monday, May 23, 2011, as she helps her daughter collect belongings at her home that was destroyed by a tornado in Joplin, Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

Laura Vanzant looks for her dog Monday, May 23, 2011 in her home that was destroyed by a tornado in Joplin, Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

The wreckage of cars and broken windows is seen St. John's Regional Medical Center in Joplin, Mo., Monday, May 23, 2011, after Joplin was hit by a tornado on Sunday. Staff at St. John's Regional Medical Center hustled patients into hallways before the storm struck the nine-story building, blowing out hundreds of windows and leaving the facility useless. (AP Photo/The Wichita Eagle, Jaime Green)

The parking lot of St. John's Regional Medical Center in Joplin, Mo., is littered with debris and damaged cars Monday, May 23, 2011, a day after Joplin was hit by a tornado that killed at least 89 people. Authorities warned Monday that the death toll could climb as search and rescue workers continued their efforts. (AP Photo/The Wichita Eagle, Jaime Green)

A man surveys homes Monday, May 23, 2011 in a neighborhood damaged by a tornado in Joplin, Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

Businesses near St. John's Regional Medical Center show damage Monday, May 23 2011 from the tornado that hit the area Sunday, killing at least 89 people in Joplin. Authorities warned Monday that the death toll could climb as search and rescue workers continued their efforts. (AP Photo/The Wichita Eagle, Jaime Green)

An American flag hangs from a twisted tree limb in Joplin, Mo., Monday, May 23, 2011. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

Shawna Neal looks through the rubble that used to be her home in Joplin, Mo., Monday, May 23, 2011. Her home and neighborhood near St. John's Regional Medical Center was destroyed when a tornado hit it on Sunday. Authorities warned Monday that the death toll could climb as search and rescue workers continued their efforts. (AP Photo/The Wichita Eagle, Jaime Green)

Residents salvage items from their home which was severely damaged by a tornado in Joplin, Mo., as a severe storm passes overhead Monday, May 23, 2011. A large tornado moved through much of the city Sunday, damaging a hospital, hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

Cars are strewn about in the parking lot at St. John's Regional Medical Center in Joplin, Mo., Monday, May 23, 2011. A large tornado moved through much of the city Sunday, damaging the hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

Rescue specialists Gerry Koeneman, right, and Lonnie Stockdale of the Springfield, Mo., fire department walk through the heavily damaged lobby of the medical records building at the St. John's Regional Medical Center in Joplin, Mo., Monday, May 23, 2011. A destructive tornado moved through the city on Sunday evening, killing at least 89 people and injuring hundreds more. (AP Photo/Mark Schiefelbein)

The parking lot of St. John's Regional Medical Center in Joplinm Mo., is filled with debris and damaged cars Monday, May 23, 2011 a day after Joplin was hit by a tornado that killed at least 89 people. Authorities warned Monday that the death toll could climb as search and rescue workers continued their efforts. (AP Photo/The Wichita Eagle, Jaime Green)

Businesses near St. John's Regional Medical Center show damage Monday, May 23 2011 from the tornado that hit the area Sunday, killing at least 89 people in Joplin. Authorities warned Monday that the death toll could climb as search and rescue workers continued their efforts. (AP Photo/The Wichita Eagle, Jaime Green)

A woman looks at the damage to St. John's Regional Medical Center in Joplin, Mo., Monday, May 23, 2011, a day after it was hit by a tornado. Authorities warned Monday that the death toll could climb as search and rescue workers continued their efforts. (AP Photo/The Wichita Eagle, Jaime Green)

Anita Stokes surveys her home that was destroyed by a tornado in Joplin, Mo., Monday, May 23, 2011. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

Deputy Eddy Mathews of the Mayes County, Okla., Sheriff's Department hands off a dog to volunteer Mike Hughey of Ozark, Mo., after rescuers found a pair of dogs in the rubble of a destroyed home near the St. John's Regional Medical Center in Joplin, Mo., Monday, May 23, 2011. A destructive tornado moved through the city on Sunday evening, killing at least 89 people and injuring hundreds more. (AP Photo/Mark Schiefelbein)

Candice Kell, 17, looks over her psychology textbook inside her grandmother's home in Joplin, Mo., Monday, May 23, 2011 after it was damaged by a tornado that destroyed nearly 30 percent of the town on Sunday afternoon. Kell and her grandmother, Jean Logan, rode out the storm in the laundry room. The twister cut a six-mile path through the city. (AP Photo/Tulsa World, Adam Wisneski)

Emergency personnel excavate a body from the wreckage of a home near the St. John's Regional Medical Center in Joplin, Mo., Monday, May 23, 2011. A destructive tornado moved through the city on Sunday evening, killing at least 89 people and injuring hundreds more. (AP Photo/Mark Schiefelbein)

Rescue workers in lime-green jackets search for bodies and survivors inside St. John's hospital in Joplin, Mo., Monday, May 23, 2011. The hospital was damaged by a tornado that destroyed nearly 30 percent of the city on Sunday afternoon. (AP Photo/Tulsa World, Adam Wisneski)

Emergency personnel dig through the rubble of a home near the St. John's Regional Medical Center in Joplin, Mo., Monday, May 23, 2011. A destructive tornado moved through the city on Sunday evening, killing at least 89 people and injuring hundreds more. (AP Photo/Mark Schiefelbein)

Alexia Neal carries a pot and a bottle of syrup out of the rubble that used to be her home in Joplin, Mo. Monday, May 23, 2011. Her home and neighborhood near St. John's Regional Medical Center was destroyed when a tornado hit it on Sunday. Authorities warned Monday that the death toll could climb as search and rescue workers continued their efforts. (AP Photo/The Wichita Eagle, Jaime Green)

Firefighters search a home Monday, May 23, 2011, that was destroyed by a tornado in Joplin, Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

People climb over wreckage in a neighborhood near St. John's Regional Medical Center in Joplin, Mo. Monday, May 23, 2011, a day after it was hit by a tornado. Authorities warned Monday that the death toll could climb as search and rescue workers continued their efforts. (AP Photo/The Wichita Eagle, Jaime Green)

Maggie Kelley and her husband, Trey Adams hug their dog, Saint, after finding him amid the rubble of her home in Joplin, Mo. Monday, May 23, 2011. The two are Hurricane Katrina evacuees. Joplin was leveled by a tornado that destroyed nearly 30 percent of the town on Sunday afternoon. The twister cut a six-mile path through the city. (AP Photo/Tulsa World, Adam Wisneski)

Josh Ramsey looks through the rubble of what is left of his mother-in-law's home following a tornado Monday, May 23, 2011, in Joplin , Mo. A massive tornado that tore a six-mile path across southwestern Missouri killed at least 89 people as it smashed the city of Joplin, ripping into a hospital, crushing cars like soda cans and leaving behind only splintered tree trunks where entire neighborhoods once stood. (AP Photo/Jeff Roberson)

Don Atteberry, 89, surveys damage at his home that was severely damaged by a tornado in Joplin, Mo., Monday, May 23, 2011. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

Rescue specialist Kris Tate of the Springfield, Mo., Fire Department digs under a destroyed vehicle at a home near the St. John's Regional Medical Center in Joplin, Mo., Monday, May 23, 2011. A destructive tornado moved through the city on Sunday evening, killing at least 89 people and injuring hundreds more. (AP Photo/Mark Schiefelbein)

Josh Ramsey looks through the rubble of what is left of his mother-in-laws home following a tornado Monday, May 23, 2011, in Joplin , Mo. A massive tornado that tore a six-mile path across southwestern Missouri killed at least 89 people as it smashed the city of Joplin, ripping into a hospital, crushing cars like soda cans and leaving behind only splintered tree trunks where entire neighborhoods once stood. (AP Photo/Jeff Roberson)

A firefighter searches a home Monday, May 23, 2011, that was destroyed by a tornado in Joplin, Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

Ashley Stephens holds a ferret she rescued from the home of a missing woman while helping a friend collect belongings Monday, May 23, 2011, in Joplin, Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

Firefighters pack up their gear outside the St. John's Regional Medical Center in Joplin, Mo., Monday, May 23, 2011. A destructive tornado moved through the city on Sunday evening, killing at least 89 people and injuring hundreds more. (AP Photo/Mark Schiefelbein)

A firefighter searches a home Monday, May 23, 2011, that was destroyed by a tornado in Joplin, Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

Glenda Clary surveys damage Monday, May 23, 2011, as she helps her daughter collect belongings at her home that was destroyed by a tornado in Joplin, Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Charlie Riedel)

People walk through a neighborhood completely destroyed by a tornado Monday, May 23, 2011, in Joplin, Mo. A destructive tornado moved through the city on Sunday evening, killing at least 89 people and injuring hundreds more. (AP Photo/Jeff Roberson)

Tom Cravens of the Pryor, Okla., Police Department looks through the rubble of a destroyed home near the St. John's Regional Medical Center in Joplin, Mo., Monday, May 23, 2011. A destructive tornado moved through the city on Sunday evening, killing at least 89 people and injuring hundreds more. (AP Photo/Mark Schiefelbein)

Sabrina Banspmer tosses a board from the destroyed home of her grandmother in Joplin, Mo, on Monday, May 23, 2011. Banspmer was doing what many Joplin residents were busy with on Monday, trying to salvage anything from their homes that were damaged or destroyed by the tornado that struck on Sunday. (AP Photo/Mike Gullett)

Aaron Hailey stands in what's left of his home in Joplin, Mo, on Monday, May 23, 2011. Hailey was attempting to salvage items from his home that was leveled by a tornado that struck Joplin on Sunday, May 22. (AP Photo/Mike Gullett)

Tornado damage is seen Monday, May 23, 2011, in Joplin, Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses and killing at least 89 people. (AP Photo/Jeff Roberson)

Traffic lights, street and miscellaneous signs were leveled with numerous houses and buildings by a tornado that struck Joplin, Mo, on Sunday, May 22, 2011. This view is near Irving School at 26th and Pearl in Joplin taken on Monday, May 23, 2011. (AP Photo/Mike Gullett)

Mary Womack, in white top at the right, reacts to the news that the renter that lived in her house had been found and taken to the hospital on Monday, May 23, 2011. There were at least 89 deaths and numerous casualties from the tornado that struck Joplin, Mo. on Sunday. (AP Photo/Mike Gullett)

Many signs and paintings on the outside of destroyed or damaged homes informed rescuers that everyone was safe and accounted for in Joplin, Mo, on Monday, May 23, 2011. This home was one of hundreds that were damaged or destroyed by a tornado that struck Joplin, Mo, on Sunday, May 22. (AP Photo/Mike Gullett)

Residents of Joplin, Mo, survey the damage of their homes and city on Monday, May 23, 2011. A tornado that struck Joplin, Mo, on Sunday, May 22, killed at least 89 and injured hundreds more. (AP Photo/Mike Gullett)

A car sits among rubble from a tornado Monday, May 23, 2011, in Joplin , Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses. (AP Photo/Jeff Roberson)

James Miller tosses aside a door as he searches through what remains of his sister's house Monday, May 23, 2011, in Joplin , Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses. (AP Photo/Jeff Roberson)

Damaged cars remain in the parking lot of a destroyed grocery store the day after a tornado swept through Joplin, Mo., Monday, May 23, 2011. Officials say thousands of other buildings were damaged or destroyed when a tornado charged through the city on Sunday evening, killing at least 116 and injuring hundreds more. (AP Photo/Mark Schiefelbein)

Nevada Missouri firefighters take a break from search and rescue work in Joplin, Mo, on Monday, May 23, 2011. Fire and rescue workers from neighboring cities and states have joined the rescue effort from the tornado that struck Joplin on Sunday, May 22. (AP Photo/Mike Gullett)

On this Sunday, May 22, 2011 photo, two young Joplin, Mo, residents carry their dog and head to a rescue center after their home was destroyed by a tornado that hit the southwest Missouri city on Sunday evening. The tornado tore a path a mile wide and four miles long destroying homes and businesses.(AP Photo/Mike Gullett)

Meghan Miller stands in the middle of a destroyed neighborhood as she checks on her sister-in-law's home Monday, May 23, 2011, in Joplin , Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses. (AP Photo/Jeff Roberson)

An undamaged crucifix rises above the rubble of St. Mary's Catholic Church in Joplin, Mo., Monday, May 23, 2011. The church and thousands of other buildings were damaged or destroyed when a tornado swept through Joplin on Sunday evening, killing at least 116 and injuring hundreds more. (AP Photo/Mark Schiefelbein)