- Researchers say the southern San Andreas and San Jacinto faults are at their highest stress in 1,000 years, raising the odds of a major quake.
- The Cajon Pass can act as an “earthquake gate” — if a rupture jumps between the faults it could produce a 7.4–7.8 magnitude event affecting Los Angeles through the Coachella Valley.
- Scientists urge urgent preparedness, warning a joint rupture could simultaneously damage highways, railways and energy corridors.
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