experts warn the “Big One” could be approaching

[Mountainlion]

The US Geological Survey (USGS) reported that a 3.2-magnitude earthquake hit the city of Concord, northeast of San Francisco, late last week. It was the fourth quake in the area within 24 hours, highlighting growing concerns about seismic activity in the region.
Concord is located less than 10 km from the Hayward Fault, a known seismic hotspot. While the San Andreas Fault, which stretches over 800 km, remains the primary focus of earthquake preparedness, scientists warn that the Hayward Fault is also due for a major quake—potentially magnitude 7—in the coming years.

Scientists at the University of California, Berkeley have calculated that the Hayward Fault generates a major earthquake approximately every 140 years.