At 3:30am we checked the forecast and the radar for the day. Things did not look good (see Schaumburg forecast below). With a high chance of thunder storms most of the day and rain, wind, and cool all day we decided to cancel. We did not want to, but Mother Nature didn't want us to do it. We are very sorry for the cancelation as we would rather be out there autocrossing as well, but no one wants to be a cold, wet, lightening rod out in the middle of a parking lot.