(Sept. 3, 2002) -- LB shook slightly at 12:08 a.m. today from a 4.6 magnitude earthquake with an epicenter roughly 3 miles NW of Chino Hills. Houses jiggled lightly but perceptibly in ELB.
The 4.6 shaker was followed by a 2.9 magnitude aftershock at 12:15 a.m. and numerous small quakes below a magnitude of 2.0.
The 4.6 magnitude temblor was preceded by a 2.6 magnitude quake in the same location at 9:50 p.m. on Sept. 2.