I lived in Maryland (DC/Baltimore area) in 2004 or 2003 (I think) when the cicadas came there. It was apocalyptic at times. I had to stand on a white roof at the Anna Rundle Mills Mall checking a roof leak in the midst of what seemed like a storm of cicadas. I thought I was in a sci-fi movie. They were in my hair, down my shirt. I finally had enough and gave into my inner wuss. Got on the radio and called it off.
BTW - Dogs love cicadas. It's like ice cream raining from the heavens. No harm until they eat 10 pounds of them. I have pictures of dog puke with bug parts and some bugs still with moving legs.
Have fun!