system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5 Why do nuclear tests not create a nuclear winter?

Just confused because people always talk about the dangers of nuclear attack being the radioactive particles carried off by the wind so why is that not the case in areas like outside Vegas where bombs were consistently tested?
gpt
Surprised no one has said this but nuclear winters have a horribly misunderstood cause, the explosions themselves don’t cause it, the subsequent fires that happen all around the world do. The explosions, while producing some radioactive waste, don’t really have a bunch of smoke lingering after them to do anything significant in this regard.

All the explosions we have had have generally been avoiding burning things.