Again with the mystery booms

Source Of Loud Boom In Foothills A Mystery

People from all over El Dorado County say they’re hearing loud booms several times a week, but there are many theories on what is causing them.

...According to USGS, there aren’t enough seismic stations to pinpoint the exact location. Meanwhile, some say the booms have been around so long and happen so often they barely notice them anymore. Still, others want to solve the mystery.

“I would like to know what it is, yeah. And I’d like to know when it’s going to stop too,” said O’Grady.

Mystery booms were previously covered here, here, and here.