Environment ❯ Geological Features ❯ Fault Lines

San Andreas Fault

Tectonic Plates California Mission Creek Strand Cajon Pass Hayward Fault San Jacinto Fault Seismic Zones Seismic Zones in Mexico

Study Finds Southern California Faults Show Record Stress, Raising Big-One Concerns

Higher stored stress in key fault segments could make a large San Andreas rupture more likely to spread, threatening critical infrastructure.

Study Finds Southern San Andreas and San Jacinto at 1,000-Year High Stress

Overnight 4.2 Jolts Indio Area as Aftershock Swarm Follows 4.9 Quake

Chiapas Feels 5.9 Quake From El Salvador as Routine M4s Continue With No Damage

Minor Earthquakes Continue Across U.S. and Territories, Largest at 4.6 Mw in Alaska