April 4, 2006 2:26 PM Subscribe
felt throughout Southern California this morning with no explanation. USGS claims there were no quakes, meteorologists claim nothing in the weather could have caused it, military bases are claiming that nothing they were doing would cause such a rumble, and air traffic controllers state that no supersonic flights were taking place in the area (no sonic boom). I was awoken by the shaking and the car alarms that followed. If it's none of the above, just what caused it?