'The big one': CA braces for massive earthquake as fault stress hits 1,000-year peak

Key Points:

• Researchers have found that California's fault lines are experiencing the highest stress levels in 1,000 years, raising concerns about a potential major earthquake in the near future.
• A new study published in the Journal of Geophysical Research used a physics-based model incorporating geological data to simulate tectonic stress along the San Andreas and San Jacinto fault zones.
• The study highlights the "earthquake gate" at the junction of these faults, particularly near Cajon Pass, where stress accumulation could trigger a significant rupture affecting both fault systems simultaneously.
• The last major quake on the San Andreas Fault was a magnitude 7.9 event in 1857 near Fort Tejon, and current stress levels suggest the possibility of an even more powerful earthquake occurring soon.
• Scientists emphasize that while the timing of such an earthquake remains uncertain, the elevated stress levels indicate the fault system could rupture "any day now," posing serious risks to California.