The target interval I see repeated over and over for radioactivity to fall to acceptable levels is 7 weeks.
Thus I have based my survival psychology around that.
49 days stuck in my bunker with my wife, kid, toddler, and baby - all girls.
The enormity of that fact mocks and belittles the enormity of a global nuclear war.
And PS: I really do have a 1960s-era fallout shelter under my back yard. It came with the house. This, inside the loop in Houston.
It is held together with both welds and rivets, and possesses a foyer, which I thought was a classy thing.
The ceiling is a full 3 feet under my lawn. Definitley not a tornado shelter.