that is how it felt. we have construction going on in our subdivision and I thought it was a piece of heavy equipment coming down the street. turned out is was a faultline coming down the street.
Well, it was a shock wave from the energy released from an earthquake fault line breaking free. The chances of a fault line going down your specific street are very low.
I only say that so that you won’t think your home may have been a bad purchase.
This was probably what you were thinking anyway, even though your terminology made it seem different.
Hope you didn’t have any damage.