Drive out in the countryside. How many houses, developments, shopping centers and warehouses do you see where you would have seen nothing but plowed fields twenty years ago?
Back in 1999, a tornado crossing one of these fields would have uprooted crops and messed up a couple of fences, but that was not such a big deal. Now, that same tornado might destroy ten houses, blow the roof off a shopping center, or kill a half dozen people. It might do $10,000,000 in damage. It is simply a matter of those things being there, when they were not there before.
The economy is becoming more decentralized, every day. There is development in places where there was never development before. The tornadoes haven’t changed... We have.
Similar to the fact that when a hurricane hits the coast anywhere from New England down to Florida and across to Texas. There are now houses, hotels, condos on every buildable stop on the Atlantic seaboard/Gulf of Mexico. Plus each one of those buildings is worth seven figures or more. This results in a lot more damage.