Two earthquakes measuring magnitudes 3.8 and 3.7 struck parts of San Diego and Imperial counties Monday morning, Caltech seismologists reported. There were no injuries or damage.
The 3.8 quake, at 3:29 a.m., was centered six miles northwest of Palomar Mountain in San Diego County. The 3.7, at 8:09 a.m., was centered three miles southwest of Salton City in Imperial County.
