[Lawtan]

Weather (more specifically a change in pressure due to weather) can do some weird things to your mind. Migraine activity + storm front = Not a good time.
And maybe you were used to the activity in Michigan, so without it, you're dreaming about it instead? Sort of a "feel the stress of the event after you've gotten past it" thing.

(Sorry I can't really think of something off the top of my head...maybe try to make your current area feel more relaxed?)