Series of small earthquakes registered along California’s San Andreas Fault

The tremors, which registered in the low-to-mid magnitude 2 range, were felt in both Northern and Southern California on Sunday.

The United States Geological Survey reported a 2.7 magnitude earthquake struck Petrolia at approximately 4:31 a.m., followed shortly after by a 2.6 magnitude quake near Santa Barbara at 4:39 a.m.

Westley also experienced a magnitude 2.5 earthquake on Saturday night.

The San Andreas Fault is visually represented on USGS interactive maps as a prominent line marking a major tectonic plate boundary.

Recent research from San Jose State University, conducted at Sanborn County Park, indicated the San Andreas Fault may be moving at a steadier rate than previously thought. Scientists observed landscape features suggesting a consistent movement rate over nearly 10,000 years.

Significant earthquakes along the San Andreas Fault have occurred in the past, including the Loma Prieta earthquake in 1989 and the San Francisco earthquake in 1906.

An earlier study from June revealed that earthquake stress levels have reached their highest point in at least 1,000 years across three segments of the San Andreas and San Jacinto faults.

“We have been lucky in California not to experience a large urban earthquake since 1994 on Northridge,” stated Ahmed Elbanna, director of the Statewide California Earthquake Center and professor at the University of Southern California. “The authors themselves, and the community, do not find the findings of the study surprising. Southern California’s crust is critically stressed and ready to rupture in a large-sized event. Whether that event would happen tomorrow, or in 10 years, that’s the part that we don’t know.”,