I’m biased, of course, being born and raised in this state. There are lists floating around the internet about “you know you’re Minnesotan if . . .” and that’s me.
Yes I do remember the Halloween blizzard of ‘91 (that didn’t stop me from trick-or-treating either). I do pronounce “boot” and “roof” in a strange way. And I do tack “then” onto the end of sentences. I even use “uff da.”