Apparently, the thunderstorms last night chained in a straight line across the Chicago area and just kept regenerating for hours. We got seven inches of rain from the storm. This was enough rain in a short enough time that -- for the first time since we've been here -- we had a foot of water at the bottom of the yard, based on the height of the line on the fence. This was enough water to cover the electrical box down there. Fortunately, it appears to have been waterproof.