Mysterious Booms in Pocono,Pennsylvania, and Ferndale Michigan

These booms seem to be spreading at least this is the first I've heard of it in Pennsylvania and the Poconos, but then I don't look at this odd stuff, (earthquakes aren't odd they're at least an explained fact,) all the time sometimes but not always, which unless story headlines grabs my attention.
While doing research saw some of you mentioned fracking, is possible, I tend to believe this theory, I suppose not being a geologist I couldn't say for sure. I read a story about the Wisconsin booms and someone said something about Yellowstone, my question is, is Yellowstone big enough to spread like this, or is it for want of a better phrase "sympathy" booms? Any typoother theories I would like to hear. Anyway hears the story. what's your theory?



Unhealthy Earth

Strong thunderstorms hit the Poconos Friday night, moving through shortly after 10 p.m. and continuing for at least a half hour, but the weather event that had folks talking was a loud sonic-like boom that shook houses at about 10:15 p.m.Some readers suggested an earthquake or an explosion, but said that definitely was no routine thunder.

Meteorologist and Pocono weather expert Ben Gelber offered this explanation: “One possibility is that thunderstorms in our chilly environment near the surface tonight, associated with an inversion of warm air aloft, sound much louder.”

Booms, Thunderstorms and no video evidence(yet). Sorry, sounds like a thunderstorm.