Financially, no it is not feasible. In the parts of the US where tornadoes are common, any particular spot is hit by a tornado on average once every 2,500 years

Financially, no it is not feasible. In the parts of the US where tornadoes are common, any particular spot is hit by a tornado on average once every 2,500 years. Of those tornadoes, 80% of them will be EF0 or EF1 intensity. An EF1 tornado will cause some roof damage and break windows but it won't tear the roof completely off or collapse walls. So it doesn't really make sense to spend money for something that happens once every few thousand years and is typically pretty minor when it happens. Especially given that it is usually completely predictable when it happens. Tornadoes don't suddenly appear out of a blue sky. There were warnings for the last few days that storms capable of producing tornadoes were likely for the areas that were hit last night. When the storms were going on, the TV networks interrupted programming and had the weather forecasters tell where the storms were and where they were headed next. Tornado sirens would have been going off long before the tornadoes hit. People would be getting texts on their phones warning them to take cover. If you're in a well-built structure, you're going to be fine in most tornadoes. Even for EF2 or EF3, you would most likely be OK even in a house without a basement if you took shelter in an interior closet on the ground floor. If you're in a mobile home, you're toast. For an EF4, you have a decent chance if you are in an interior room in a basement. So for the vast majority of tornadoes, which are already rare, there isn't much reason so spend money to protect property when there is already a way to protect lives. For EF5 tornadoes, it would be challenging to build anything other than an underground bunker to withstand them. They are incredibly rare, Wikipedia says 59 in the US since 1950. An EF5 tornado doesn't just level a house, it rips it from the foundation, sends it flying through the air and shatters it into a million pieces. Here's what an EF5 tornado does to a house: https://www.spc.noaa.gov/faq/tornado/f5.htm https://www.spc.noaa.gov/faq/tornado/f5.htm. It can rip the asphalt from a roadway and send it flying through the air. If you're in a building in the path of an EF5 tornado, you are probably best off following the advice my redneck step dad gave me when I was a kid for what to do in the case of a nuclear attack. He said to head down to the basement to an interior hallway, crouch down on the floor, tuck my head down between my knees as far as I could, and kiss my ass goodbye.