I went back and looked at my pics from last year when a friend and I made a trip to State College (April 29th/30th). Ironically we are heading up this weekend. There were March Browns hatching this time last year because I had the best day of dry fly fishing in my life fishing them on Penns. I was kind of confused when the guys at the Feathered Hook blog said this is the earliest they have seen some of these bugs hatch in their careers. Sulphurs and March Browns were early last year too according to the normal hatch charts.