OK, this is just strange…
A series of strange window-rattling booms or rumbles have been heard and felt in recent months in Alabama, North Carolina, Mississippi, and, on April 4, in San Diego County. The latest disturbance was said to have set off car alarms, caused waves in a backyard pool, and shook double steel garage doors. It wasn’t an earthquake. And the Federal Aviation Administration has no record of planes breaking the sound barrier at the time. Apparently, nobody seems to know what the hell caused the disturbance.
