Nevada: heat, lack of water, and highly visible roadways make the Silver State inhospitable to post-apocalyptic survivors. Good luck finding water, and there is barely enough to eat if one is forced to forage.

Since we in Las Vegas are also host to three major strike targets (Hoover Dam, Nellis AFB, and the Strip) there is a prety good chance that there won't actually be many survivors in some catastrophe scenarios.

If you are trying to escape in a crisis, there is not much chance of it. We have few exits from the state, and all are heavily-monitored. The roads are all visible from miles away, meaning you would become easy prey for bandits and govt. stooges should you wish to flee without climbing impassable mountains.