Well, you remember how it tore up Moore really bad?
The problem was, IIRC, many ppl didn’t have cellars or storm shelters. By the time it bore down on them it was either run away in a car (many died trying) or ride it out in their above ground apartment, stick house, etc. The roads were jammed. A substantial portion of casualties were those attempting to flee by car.
I was in an apt. in Lawton and ID-d a tel. manhole cover nearby that I planned to pry off and get in should one come our way. Not guaranteed but a better chance then a 2nd floor apt in a stick building.
Lots of times workmen go down into unventilated utility manholes and die in minutes due to air quality issues. I’ve seen it up close.
His house was about half a mile away from the tornado's track. They were at their son's school when it got hit. He wound up with horse mashing his mini-van in the parking lot. The hospital where they worked got wiped out.
They decided it was time for a garage shelter after that. Haven't used it since.
Tornadoes can be ferocious storms but your chance of getting hit are not that great. The military got me to Arizona where we never needed to worry about that. But, some of the summer dust devils here can be like EF-1s.