Obama to visit tornado-stricken Oklahoma Nearly a week after a massive tornado struck a suburb of Oklahoma City, US President Barack Obama is expected to visit the devastated area on Sunday. Obama will see firsthand the response to the destruction caused by the twister that hit Moore, Oklahoma, killing 24 people, including 10 children. He will visit with families affected by the storm and thank emergency response teams, a White House statement said. An estimated 13,000 houses were destroyed by the storm, which also injured 350 people. Damage is estimated at $US2 billion ($A2.06 billion). A prayer service is planned for Sunday night at a church in Moore, however, it will take place after Obama leaves. The service is open to the public and everyone is invited, Oklahoma Governor Mary Fallin said. Meanwhile, donations for the victims have begun pouring in. A concert to benefit the victims will be held on Wednesday in Oklahoma City. Country-western singer Blake Shelton, who is from Oklahoma, will host the event. Country-western stars Vince Gill, Reba McEntire and Miranda Lambert are expected to perform.