Strange Sound Reported in San Diego
Via: NBC San Diego
Residents from Chula Vista to Oceanside reported a large rumble around 12:45 p.m. Friday.
The mysterious sensation was described by some people as sounding like a door slamming while others said it was strong enough to rattle windows.
A check of the U.S. Geological Survey website showed no earthquake activity.
Two months ago, when San Diegans heard a similar sound, there was evidence of chaff on weather radar. Chaff is a material sometimes emitted during military exercises.