What is the loud boom heard in Vestavia, Alabama, just now?
An earthquake? Another sonic boom from a fighter jet? Does anybody know?
I just found this: https://twitter.com/AdamLoudermilk/status/705621206112686081
It was also heard at a fire station. Police is investigating. Nothing yet.
I suspect they are due to sinkhole formation. No one knows yet for sure.
Heard them also. What are they?