The Big One Coming? California's San Andreas Fault Line Activity Indicates Major Earthquake Threat

A new study suggests stress levels along Southern California's San Andreas and San Jacinto fault systems are at their highest point in 1,000 years, placing the region in a "critically loaded state."

San Andreas Fault stress hits 1,000-year high, raising quake risk

Scientists say the San Andreas and San Jacinto faults are more stressed than at any time in 1,000 years, raising questions about future California quakes.

Cajon Pass appears primed for a massive earthquake crossing two major Southern California faults

The ground north and east of Los Angeles holds one of Southern California’s most uneasy meeting points. At Cajon Pass, the San Andreas and San Jacinto fault systems crowd together in a tectonic
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The dead zone map that's raising alarm: Natural fault lines that could shift without warning

Most people picture earthquakes as a West Coast problem. California shakes regularly, the news covers it, and residents there have grown accustomed to a certain background level of geological anxiety. The rest of the country, though, has largely assumed it ...

Where a major Hayward fault quake could shake the Bay Area hardest

A major Hayward fault quake could shake some Bay Area communities harder than expected because of the ground beneath them, new federal simulations show.