A magnitude 1.9 quake shook West Hollywood about 1:35 a.m., according to the U.S. Geological Survey. About 15 minutes later, a 3.3 temblor rattled the Norwalk area.
The latter earthquake was measured at a depth of about 6 miles, with an epicenter located 2.3 miles north of Artesia.
No injuries or damage were reported.