The 17yr cicadas are predicted to emerge this year. Experts are predicting huge numbers and they have published a map to predict where the first cicadas will be. I swore I have heard a few already but what's strange is I hear them right before dark then it goes silent. The usual summer cicadas can be heard well into the night. This makes me think I might not be hearing cicadas or these are the cicadas and they just aren't singing because they don't hear others. There might not be enough response to their songs for them to keep singing. Just a theory. The prime ground temperature needs to be 64 degrees. We've had 75degree and above temperatures for the last week. The ground temps have to be close to that. I'll try to keep you updated for those of you who care about these beautifully ugly loud insects.