I watched it; there was a time in high school where I wanted to write a novel about the aftermath of nuclear war, and did a bunch of research on the topic. It'

I watched it; there was a time in high school where I wanted to write a novel about the aftermath of nuclear war, and did a bunch of research on the topic. It's terribly scientifically inaccurate, though. Airburst nukes (the type that would generally be used on cities) do not generally spread large amounts of fallout into the atmosphere; they do not generally spread large amounts of fallout at all, because the fireball doesn't reach the ground. We'd likely get the sort of massive urban blast damage from the first half of the movie, but wouldn't get the nuclear winter, collapse of crop harvests, and widespread starvation from the second half of the movie. And we should expect to see local government spring up in areas undamaged by the blast - if the national government falls, state/provincial or local government will step into that void, because power abhors a vacuum.