The big one has been predicted on the New Madrid fault for a long time. I don’t doubt it’s coming, though.
but it keeps many at FEMA employed
Don't be so sure.
If it does, try to get access to a boat.
Once the ground starts shaking severely, liquefaction starts to occur and the ground turns into an oatmeal consistency...
First you'll notice buildings and homes start to "bob" around, as the shaking continues, the buildings start to sink into the goo...Some will just get swallowed up...Others will actually be "burped" back up to the surface when struck with vertical aftershocks...