A 4.1 aftershock from last night's 5.1 La Habra quake hit Rowland Heights at 2:32 p.m. today.
The 4.1 quake happened about 1 mile southeast of Rowland Heights and was 5.6 miles deep, according to USGS. The epicenter was about 3 miles north of Brea 4 miles northeast of La Habra, where last night’s quake hit.
The earthquake was initially reported as a 4.5 but was downgraded shortly thereafter.
"This is a normal aftershock sequence,'' according to Lucy Jones, a visiting research associate at Caltech's Seismological Laboratory, CIty News Service reported.