los angeles

Jae C. Hong/AP

An earthquake shook part of Southern California Friday night, breaking water pipes and rattling nerves with aftershocks that went on into the night. The 5.1-magnitude quake hit at a shallow depth about 20 miles southeast of Los Angeles.

While the quake didn't inflict severe damage in the area around its epicenter, it caused many problems, from water main breaks to a rockslide. Thousands of people felt its effects; there haven't been reports of serious injuries.