Avoiding tornadoes - no place to guarantee that, you just have to hope for the best.
We have enjoyed Wisconsin state parks - nice sites, often wooded, often private, with electric hookups in many sites. Some of our favorite CGs are along/near Lake Michigan or the Mississippi River: Point Beach State Forest, Wyalusing SP, Kohler-Andrae SP, High Cliff SP (on Lake Winnebago.
And talk about agriculture, Wisconsin is a prime candidate. :) Yes, there really are a lot of dairy farms. You might be on the lookout for a "dairy breakfast" in some parts of Wisconsin - local farmers sometimes hold big breakfast cookouts (or cook-ins) in their barns on weekends in late spring/early summer. Not only a good, big breakfast, but things to see & do, like check out an old tractor display, pet calves, watch cows being milked, etc.
