Safe Haven specializes in providing above-ground storm shelters, rather than traditional below-ground models. Some yards will not accommodate an in-ground model because of space or water run-off.

At the Tulsa Home and Garden Show, there are quite a few shelters to choose from. The business Family Safe was the first to bring above-ground steel shelters to this show 18 years ago.

The average storm shelter cost ranges from about $3,000 to $13,000, depending on the type, size, material and installation method, according to home services website Angi. Less expensive options ...

The safest place to be in a tornado is in an above-ground storm shelter, said Tanner. These structures are usually made of reinforced concrete, but sometimes are made of plywood and steel.