I'm getting involved late, but I like the OP's concept and thought I'd run with it and see where I end up ...
I live in PA in the USA and we have several military targets here, as well as some civilian terror ones. Though if it happened right now, I'd say that it would probably be the closest nuclear power station, because that's a two for one nuke attack. You get the initial impact followed up with a secondary nightware when the station itself goes critical.
So I'm sitting here at work in my cube (no windows) and I feel the rumble from the distant blast. The lights probably flicker, or maybe go out all together. I'd probably survive the initial attack ... in fact, we'd all probably run outside and try and figure out what happened. We'd most likely see the end of the mushroom cloud rising into the air. I'd likely be frozen looking at it for several long seconds ...
Then I would starting thinking about where I needed to get to and who I needed to find. My wife and I live close to the station, so going home is out, but we both work within 40 to 50 miles of the power station, but on opposite ends ... I'd want to get to her first, but I would assume communications would be temporarily disrupted, which is a problem, because we never really discussed an emergency plan to handle something like this (writes himself a note to do that tonight).
But since it happened now ... she'll probably try and call me, I'd call her .. no luck. I'd want to get to her as quickly as possible but driving on main roads might prove difficult the longer I delay so I'd run into work, grab my keys and jump in the car and start out. I know some back roads to get to the highway .. it will likely be difficult but I think maybe if I react quickly enough I can hit the highway.
Of course, the problem here would be that my wife is going to try to do the same thing, but information may get to her a bit slower since I'm closer so depending on that I might be able to get to her parents house and link up with her there... it's closer to her work and is a likely meet up location. Meanwhile, my parents are probably freaking out, lol, but I don't think I'll be able to catch them for a while.
Her parents are a good location too because her dad has firearms, which will be important. What's really gonna fuck us is the fact that we don't already have a plan in place. I think I would react better than she would in this case, but that doesn't help us if linking up is the goal. Also, I'd try to gather any additional information I could.
Is there radio? TV? Who else has been hit? Has anyone else been hit? Hmmm, not sure what we'd do next .. even her parents are close enough to experience some form of wind carried rads. I'm probably dead, in the long run, because my inability to save myself over the need/desire to link back up with my wife would prevent me from acting swiftly enough to escape direct or long term exposure from the radiation.
Actually, I'm glad I read this thread ... I do need a better plan for my wife and I in the event of a major emergency like this.