A 10 kiloton bomb is only roughly equal to the bomb dropped on Hiroshima. Today's individual warheads are on average 25-50 times that, making those survival maps overly optimistic.
W-87 warhead 300 kt (10 of these are in a [link:http://en.wikipedia.org/wiki/LG-118A_Peacekeeper|LG-118A Peacekeeper])
W-88 warhead 475 kt (8 of these may be in a Trident II missile)
Good info John - I was wondering why the damage was less than I had thought an atomic bomb would be. But at 10 kilotons, I live on the right side of my city (or wrong - depending, I think I'd rather get it over with immediately than suffer).