It's insane that one bomb can basically wipe out an entire metropolitan area that spans several counties. I tried dropping the same one on my city to get a more intimate perspective, and holy crap. The people getting 3rd degree burns wouldn't even consider themselves to be in my metropolitan area. They'd be thinking they're entirely somewhere else.

Luckily, no one makes bombs with this high a yield. I think the highest yield of any deployed weapon is ~10% of that Tsar Bomba one. One would still destroy my city, but it wouldn't completely erase it.