Yes it is. Simple fact. You may not survive an F5 inside a building, a basement, or even a bunker, but you100% won’t survive it if you are outside above ground. What exactly do you think a 3rd grader would do if you told them there was a tornado and that they should run away?
Think of tornadoes like artillery fire. You don’t survive in the open.
Exactly. That is why every kid raised in tornado country was and should be taught to get flat in a low spot or a culvert and stay there until it's over. That's what I was taught.
Had my elementary school teacher told me to cower in the corner of a government building built by the lowest bidder, I would have taken my chances on the open prairie.