http://www.nytimes.com/2013/05/14/science/marvels-and-a-few-mysteries-in-cicadas-17-years.html?_r=0
It is expected that the cicadas will be like a Pharaoh's plague . They were born in 1996 and are now coming out because conditions are just right. Amazing. Creatures that can hide under the ground almost for ever and then come out when times are good.