A relatively obscure fault line in California, already recognized as one of the riskiest in the country, experienced another earthquake early Thursday. This tremor was felt across the Bay Area and resulted in two aftershocks.
The 3.8 magnitude quake hit at 8:30 a.m., close to the Oakland Zoo and Bishop O’Dowd High School, as reported.
Initially rated at 4.1, the earthquake’s magnitude was later adjusted downward.
Following the main quake, two aftershocks of 3.0 and 2.8 magnitude occurred in the same location around 9:07 a.m.
Numerous individuals reported feeling the tremors, which could be detected as far north as Santa Rosa and Sacramento and as far south as Santa Cruz.
The epicenter was situated near the Oakland Zoo, just above the well-known Hayward Fault. This fault, a 74-mile crack in the earth, runs through densely populated areas like Berkeley, Oakland, and Fremont.
Scientists have long been concerned about the potential consequences of a significant rupture along this fault.
It has the capacity to generate quakes exceeding magnitude 7, with the last major event recorded in 1868.
The Hayward Fault, which is part of the San Andreas Fault System, is perhaps less famous than its more notorious counterpart, yet experts are equally cautious, citing that it is overdue for another major quake.
Researchers suggest that a substantial earthquake happens along this fault roughly every 95 to 183 years, an indicator that a major rupture could be imminent.
The U.S. Geological Survey reports a 14.3% probability of a quake of magnitude 6.7 or greater occurring by 2034, and a 33% likelihood by 2043.
Describing the fault as a “tectonic time bomb,” USGS earthquake expert David Schwartz noted a sense of inevitability regarding its potential danger.
Teams at Lawrence Livermore National Laboratory and Lawrence Berkeley National Laboratory conducted 50 simulations of a possible magnitude 7 rupture to visualize the dire consequences.
The findings indicate that some areas within the Bay could experience shaking up to 50% stronger than earlier estimates suggested, with specific cities like Oakland, Berkeley, and Hayward standing particularly at risk.
One disaster scenario from the USGS paints an alarming picture, estimating that a significant earthquake on the Hayward Fault could result in about 800 fatalities and injure roughly 18,000 individuals.
The potential devastation could stretch well beyond the immediate destruction of buildings.
There could be numerous fires, tens of thousands of homes lost, and almost half a million people becoming displaced.
As of now, there are no reports indicating significant damage or injuries following Thursday’s quake.
