I checked out a similar site awhile back. I live on the north side of Chicago. If a bomb went off near Wrigley Field, I'd be toast. If one went off downtown--which seems much more likely--it would just be fire and chaos. Though evacuating would be ideal, I really don't think Chicago's prepared for anything of that scale. If the prevailing winds were typical, the fallout would end up in Lake Michigan. I'd shelter in place for a few days, defending the evac vehicle then make my way out of the city. I'm getting prepared to do it on foot, but with a wife and child and one on the way, the prospect of doing that is...daunting, to say the least.

That's an interesting movie, BTW. Probably not as likely a scenario as the smaller yield, personally delivered nuke, but who knows what the world will look like in 10, 20 years.