4.5 San Bernardino Earthquake Rumbled, then Jolted

A 4.5 earthquake, first reported to be magnitude 5.0, struck tonight in the San Bernardino area at 7:49 p.m. There have been no immediate reports of major damage or injuries save for pictures frames and other household items falling in homes near the epicenter.

"Earthquake experts have long said San Bernardino is particularly vulnerable to a massive temblor -- the type many times stronger than Thursday's quake," noted the LA Times. "San Bernardino lies between two of the state’s most active earthquake faults, the San Andreas and the San Jacinto. Moreover, much of the city was built above a huge underground water basin."

TV and radio witness reports indicate there was a slight rumble before a large jolt and "sonic boom" like noise.