I got witness one of the freakiest weather events in Wisconsin yesterday.
I had business in downtown Milwaukee. On my drive eastward into the city, I could see a large wall of clouds hovering over the lake, but it's perfectly sunny and clear everywhere else. As I got closer, more and more cars traveling in the opposite direction were covered in new snow; some had upwards of six inches. It was still sunny where I was driving. As I get closer to the lake, there's snow everywhere, a respectable covering of 3-4 inches. Cars in the parking lot were covered, some nearly 12 inches.
Then, for lunch, we go a bit further into downtown -- say about four blocks -- and it's a literal blizzard. Snow falling at a rate that would put several inches on the ground in an hour. We get our lunch to go and drive back to the office. Not a flake in the sky. During the next hour during a meeting, it would alternate between blizzard and sun, depending on the wind. At the end of the day, I had no snow on my car, but I'm sure that several inches had fallen upon it.