I think Independence Day, Jaws, and Twister all traumatized me enough as a kid independently. It was fine at first, I wasn't plagued with it or anything for a long time.
Then I moved to Denver, and the memory of those movies instilled a big bag of phobias in me.
Thing about Denver that's weird is that during the summer the weather is the same every day; Crystal clear in the morning, then a wall of clouds emerges from behind the mountains and flash-floods the shit out of everything (more or less) in the evening.
If you haven't seen Independence Day, the beginning of the movie is basically just a bunch of humongous spaceships entering Earth's atmosphere with huge walls of clouds burning around them that are not unlike those clouds I described earlier.
Compile that with the fact that I'd been terrified of tornadoes and lightning, ultra-violet light, aliens, the apocalypse, things jumping out and scaring me, ghosts, my condominium collapsing, the sun exploding, spontaneous human combustion, and basically just stuff in general, I was never not scared.
Oh, the joys of childhood.