MSU posted an article explaining the dead patches that are in lawns everywhere right now.

http://msue.anr.msu.edu/news/what_are_those_dead_grass_tips_in_my_lawn?utm_source=Turf+%26+Landscape+-+MSU+Extension+News+-+5-24-13&utm_campaign=Turf+%26+Landscape+5%2F24%2F13&utm_medium=email