Millions of cicadas are set to emerge this spring in Pennsylvania as part of the Brood 14 cicada population. After 17 years underground, these red-eyed insects will make their appearance across most of the state. The emergence is expected to begin around the end of this month or early May when soil temperatures hit 64 degrees. This time, you can track cicada sightings using the free Cicada Safari app, and you can expect noisy, buzzing cicadas as they search for mates this spring.