Add Yahoo as a preferred source to see more of our stories on Google. Tectonic stress building beneath Southern California could have far-reaching consequences for millions of residents from the ...

The San Andreas fault is the most famous fracture in the American landscape, a roughly 800-mile scar running the length of California where two of the planet’s great tectonic plates grind past each ...

A hidden shard of ancient crust has been detected where California’s San Andreas system collides with the Cascadia subduction zone, reshaping how I understand the tectonic engine of the West Coast.

A police car guards a section of a Los Angeles freeway cracked by the magnitude 6.7 Northridge earthquake in 1994. | Steve Starr/CORBIS/Corbis via Getty Images “The Big One,” the theoretical ...

When the tectonic subduction zone beneath the Pacific Northwest moves, it does so in dramatic fashion. Not only is ground shaking from a magnitude 9+ earthquake incredibly destructive, the event ...

Add Yahoo as a preferred source to see more of our stories on Google. California's earthquake time bomb may be ticking faster than scientists realized. Just a week after a magnitude 3.9 quake rattled ...

The volatile seismic zone along the roughly 750-mile (1,200-km) San Andreas Fault and the smaller San Jacinto Fault are now "critically stressed" – reaching a 1,000-year high level of pressure – ...

Provided by U.S. Geological Survey Aug 21, 2026 Aug 21, 2026 ...

Stress on the San Andreas Fault System has reached a 1,000-year high, according to new research from the University of Hawaii. Higher stress on a fault means the pressure that causes earthquakes is ...

California’s earthquake time bomb may be ticking faster than scientists realized. Just a week after a magnitude 3.9 quake rattled Oakland’s Hayward Fault, researchers at San Jose State University have ...