What can even be done in the event of a tornado? The one time one was super super close to my property, I almost walked my mare down in to the basement, but I figured I'd probably have to have a lot of help to get her out and I'd feel pretty silly if no tornado actually came. She is the type that could be walked in to a basement and stand quietly. I don't even know what you'd do with a full size horse, particularly a high strung one like my TB. Most barns would blow right over, so not much safer than the pasture. I am genuinely curious about this since we get several tornadoes every year.
Tug on anything at all and you'll find it connected to everything else in the universe.~John Muir