RIDGECREST, Calif. (AP) — Officials in Southern California expressed relief Saturday that damage and injuries weren't worse after the largest earthquake the region has seen in nearly 20 years, while voicing concerns about the possibility of major aftershocks in the days and even months to come.

No fatalities or major injuries were reported after Friday night's 7.1-magnitude earthquake, which jolted an area from Sacramento to Mexico and prompted the evacuation of the Navy's largest single landholding, Naval Air Weapons Station China Lake in the Mojave Desert.

The quake struck at 8:19 p.m. Frida...