I don’t remember so many reports of “booms” everywhere until recently. It’s getting to be every other day some sort of boom is making the news. It’s even starting to feel commonplace. There are all sorts of explanations being offered.
Here we have yet another strange boom and shaking, this time in San Diego at 9 am this morning. This was reported in an article from NBC here. No seismic activity reported and speculations of a military exercise called chaff or strong lightening. A witness describes it as atmospheric.
I’ve created a quick poll if you care to weigh in. If I left something out feel free to put it in the comments.