It's the Cicadas!

No problem. I've been hearing Cicadas for 40 years...it's called Tinnitus.

With all the recent concerns about power surges and solar storms, I thought people might be on edge, listening for problems. So I decided to reassure everyone that their systems were okay if they hear that sound. Now, if you hear a low frequency hum, you may actually have a problem. 😏

@mashif If you hear a low frequency hum that might be the aliens landing. Look out your window. 😏