Ethan Pederson, 9, and his mom Susan Goodman clear away debris as they help salvage items from a friend's home that was destroyed by a tornado Tuesday, March 7, 2017, after a severe storm passed through Oak Grove, Mo. Monday night. (AP Photo/Charlie Riedel)
Ethan Pederson, 9, clears away debris as he helps salvage items from a friend's home that was destroyed by a tornado Tuesday, March 7, 2017, after a severe storm passed through Oak Grove, Mo. Monday night. (AP Photo/Charlie Riedel)
Cori Brown takes a break from helping salvage items from a friend's tornado-damaged home Tuesday, March 7, 2017, after a severe storm passed through Oak Grove, Mo. Monday night. (AP Photo/Charlie Riedel)
Tedd and Judy Baumgardt haul debris to their front curb after their garage and front window was blown in and many of their possessions destroyed after a likely tornado passed through Monday night in Clarks Grove, Tuesday, March 7, 2017. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (Glen Stubbe/Star Tribune via AP)
Tedd Baumgardt walks past a fallen tree after a likely tornado passed through Monday night in Clarks Grove, Tuesday, March 7, 2017. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (Glen Stubbe/Star Tribune via AP)
Skye Miller stands on the porch outside his apartment surrounded by roofing material after a likely tornado passed through Monday night in Clarks Grove, Tuesday, March 7, 2017. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (Glen Stubbe/Star Tribune via AP)
A man walks by a damaged fertilizer plant after a likely tornado passed through Monday night in Clarks Grove, Tuesday, March 7, 2017. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines an d damaging buildings. (Glen Stubbe/Star Tribune via AP)
Residents look at their destroyed shed and a sheet of plywood was lodged in a tree after a likely tornado passed through Monday night in Clarks Grove, Tuesday, March 7, 2017. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (Glen Stubbe/Star Tribune via AP)
Tedd and Judy Baumgardt stand in their living room where their front window was blown after a likely tornado passed through Monday night in Clarks Grove, Tuesday, March 7, 2017. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (Glen Stubbe/Star Tribune via AP)
Damage from Monday's storm is shown to the side of a house near Ann Lake where a boat trailer had been tossed against it on Tuesday, March 7, 2017, in Orrock Township near Zimmerman, Minn. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (David Joles /Star Tribune via AP)
A homeowner removes branches from a downed tree that had fallen on to two vehicles after severe weather passed the area on Tuesday, March 7, 2017, in Orrock Township, Minn. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (David Joles /Star Tribune via AP)
A downed power pole from a storm Monday evening is scattered on the ground, Tuesday, March 7, 2017, in Orrock Township near Zimmerman, Minn. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (David Joles /Star Tribune via AP)
Boats and debris cover a yard near Ann Lake after severe weather passed the area on Tuesday, March 7, 2017, in Orrock Township, Minn. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (David Joles /Star Tribune via AP)
A side of a house is destroyed from a storm Monday evening is shown in Orrock Township near Zimmerman, Minn., on Tuesday, March 7, 2017,. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (David Joles /Star Tribune via AP)
Mike Harmon watches as friends and family salvage items from his destroyed home Tuesday, March 7, 2017, after a tornado tore through Oak Grove, Mo., Monday night. (AP Photo/Charlie Riedel)
Amanda Tenshler, left, and her mother Brenda Tenshler hand out lunches to residents of the Wentzville Mobile Manor on Tuesday, March 7, 2017 after an tornado damaged homes and businesses late Monday. A storm system dropped more than 30 tornadoes across the Midwest overnight. (Robert Cohen/St. Louis Post-Dispatch via AP)
A downed power pole and transformer from a storm Monday evening is on the ground Tuesday, March 7, 2017, in Orrock Township near Zimmerman, Minn. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (David Joles /Star Tribune via AP)
A family removes a tree from atop their cars after severe weather passed the area on Tuesday, March 7, 2017, in Orrock Township, Minn. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (David Joles /Star Tribune via AP)
Boats and debris cover a yard near Ann Lake after severe weather passed the area on Tuesday, March 7, 2017, in Orrock Township, Minn. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (David Joles /Star Tribune via AP)
A downed power pole and transformer from a storm Monday evening is on the ground Tuesday, March 7, 2017, in Orrock Township near Zimmerman, Minn. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (David Joles /Star Tribune via AP)
A side of a house is destroyed from a storm Monday evening is shown in Orrock Township near Zimmerman, Minn., on Tuesday, March 7, 2017,. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (David Joles /Star Tribune via AP)
A family removes a tree from atop their cars after severe weather passed the area on Tuesday, March 7, 2017, in Orrock Township, Minn. Weather experts say a likely tornado touched down northwest of the Twin Cities, taking down trees and power lines and damaging buildings. (David Joles /Star Tribune via AP)