California
Six earthquakes hit Southern California in one week. Does that mean ‘The Big One’ is coming?
In recent days, Southern California has experienced one earthquake after another. A 3.6 in Ojai on May 31. Two of a similar magnitude under the East Los Angeles area of El Sereno. Another three quakes near Newport Beach and Costa Mesa.
While these quakes were far weaker than historic temblors like the 6.7 Northridge Earthquake of 1994, which caused an estimated $20bn in damage and killed over 57 people, do they herald the arrival of the so-called Big One in a state sitting on multiple, highly active faultlines?
There’s the notorious 800-mile-long San Andreas, which runs from near the Mexico border, east past Los Angeles, then up the coast north of Sacramento.
Major quakes occur along the fault every 180 years or so, and the San Andreas hasn’t had a majorly powerful one since 1906. The US Geological Survey estimates it has a 60 percent chance of causing a magnitude 6.7 or greater in the Los Angeles area in the next 30 years.
Of even greater concern is the Cascadia Subduction Zone, which runs from Northern California to British Columbia, Canada. It’s overdue for an even larger quake compared with historical averages.
So, are the recent earthquakes an ominous omen of something larger, or business as usual in a state with an estimated 35 quakes a day?
The El Sereno quakes, for example, happened just under the Puente Hills thrust fault, which runs beneath downtown Los Angeles and Orange County. The 10-mile deep fault angles like a ramp and gets closest to the surface near the LA campus of the University of Southern California. If a quake along this fault hits the loose earth of the Los Angeles Basin, it could amplify the intensity of an earthquake by up to ten times compared to areas located on bedrock.
The Newport Beach-Costa Mesa temblors, meanwhile, took place near the Compton thrust fault, which could raise the LA River by up to 5 feet in a strong quake, wreaking havoc on city sewer systems. There have been six quakes above magnitude 7 along the fault in the last 12,000 years, according to geologists.
Scientists argue that instead of focusing solely on the largest quakes by magnitude, the key consideration is how much damage they could do to densely settled areas. The San Andreas, despite its famous reputation, runs for large sections through sparesly populated desert.
“In some respects, the ‘big one’ in terms of damages and deaths would be ones running through town rather than one that’s a long distance away,” Dr. Pat Abbott, professor of geology emeritus at San Diego State University, told KSWB last year. “There’s the size of the earthquake, and then also where you are situated compared to where the fault’s moving.”
He pointed to major quakes like the 1857 and 1906 San Andreas earthquakes, as well 1994’s Northridge earthquake, all of which were under the 8.0 magnitude contemplated in “Big One” scenarios but which still caused “horrendous” damage.
“Unfortunately, earthquake prediction remains an extremely challenging endeavor,” according to the California Governor’s Office of Emergency Services website. “While scientists can monitor fault lines and detect patterns of seismic activity, they cannot predict exact earthquakes reliably.”
Instead, scientists deal more in the realm of long-term probability, which can inform what high-risk areas can do to prepare for the day when the hard-to-predict prospect of a major quake arrives.
For instance, the USGS estimates that there’s a 72 per cent chance a 6.7 or greater magnitude quake will hit the San Francisco Bay Area in the next 30 years.
Finding a greater level of precise prediction is the “holy grail” of earthquake science, University of Washington seismologist Harold Tobin wrote last year.
“Science has not yet found a way to make actionable earthquake predictions,” he wrote. “A useful prediction would specify a time, a place and a magnitude – and all of these would need to be fairly specific, with enough advance notice to be worthwhile.”
In the meantime, until that magic predictor code is unlocked, governments can push for preparedness measures like digital alert systems, practice drills, and building retrofits, while individual citizens are advised to have emergency kits in place and drop to their knees, cover their head and neck, and hold onto something stable when a quake begins.
California
Supreme Court blocks California law limiting schools from telling parents about trans students
BAKERSFIELD, Calif.(KBAK/KBFX) — The U.S. Supreme Court has temporarily blocked a California law that limited when schools could require staff to disclose a student’s gender identity, clearing the way for schools to tell parents if their children identify as transgender without getting the students’ approval.
Rear view of multiracial students with hands raised in classroom at high school
The decision came after religious parents and educators, represented by the Thomas More Society, challenged California school policies aimed at preventing staff from disclosing a student’s gender identity.
Erwin Chemerinsky, dean and professor of law at the University of California Berkeley School of Law, said the ruling favors parents’ ability to be informed. “The Supreme Court today rules in favor of the claim of parents to be able to know the gender identity and gender pronoun of the children,” Chemerinsky said.
FILE:{ }transgender flag against blue sky background { }(Photo: AdobeStock)
The decision temporarily blocks a state law that bans automatic parental notification requirements if students change their pronouns or gender expression at school. The Thomas More Society called the decision a major victory for parents, saying the court found California’s policy likely violates constitutional rights.
Chemerinsky said the Supreme Court’s action is an emergency ruling. “This law is now put on hold. So what this means is that schools can require that teachers and other staff inform parents of the gender identity or gender pronouns of children,” he said.
Kathie Moehlig, founder and executive director of Trans Family Support Services, said she is concerned about how the ruling could affect students who do not have supportive families.
“I am really concerned about our kids that do come from these non affirming homes, that they know that they’re going to get in trouble, that they’re going to possibly have violence brought against them possibly kicked out of their homes,” Moehlig said.
Moehlig said parents should eventually know, but that the conversation should happen when a student feels safe. “Our students are going to be less inclined to confide in any adults that might be able to help to get them access to mental healthcare, to a support system. They may still tell their peers but they’re certainly not going to tell any other adult,” she said.
Equality California, a LGBTQ+ civil rights organization, shared a statement:
Equality California, the nation’s largest statewide LGBTQ+ civil rights organization, released the following statement from Executive Director Tony Hoang in response to today’s U.S. Supreme Court shadow docket ruling in Mirabelli v. Bonta regarding California’s student privacy protections for transgender youth. Today’s decision by the U.S. Supreme Court to intervene in this case is deeply disturbing. By stepping in on an emergency basis, the Court has effectively upended California’s student privacy protections without hearing full arguments and before the judicial process has run its course. While not surprising, this move reflects a dangerous willingness to short-circuit the established judicial process to dismantle protections for transgender youth. While this case continues to be litigated, the ruling revives Judge Benitez’s prior decision, which broadly targets numerous California laws protecting transgender and gender-nonconforming students — threatening critical safeguards that prevent forced outing and allow educators to respect a student’s affirmed name and pronouns at school. These protections exist for one reason: to keep students safe and ensure schools remain places where young people can learn and thrive without fear. To be clear: today’s decision does not impact California’s SAFETY Act, which prohibits school districts from adopting policies that forcibly out transgender students. The SAFETY Act remains in full effect, and we will continue defending it. Transgender youth deserve dignity, safety, and the freedom to learn without fear. We will never stop fighting for transgender youth and their families. Equality California will continue working with parents, educators, and advocates to ensure schools remain safe, welcoming, and focused on the success and well-being of every student.
The case now returns to the U.S. Court of Appeals for the Ninth Circuit, which will decide whether the California law is constitutional.
Congressman Kevin Kiley has announced his plan to run in California’s newly redrawn 6th district.
In a statement on Monday, Rep. Kiley revealed he had considered running in the 5th District – which could have set up a possible showdown between two current Republican officeholders.
“It’s true that I was fully prepared to run in the new 5th, having tested the waters and with polls showing a favorable outlook in a “safe” district. But doing what’s easy and what’s right are often not the same,” Kiley stated.
Kiley currently represents California’s 3rd district, which originally comprised counties making up much of the back spine of the state.
As of the Prop. 50 redistricting push, the 3rd district was redrawn for the 2026 midterm election to lean toward the Democratic Party – with those eastern spine of California counties lopped off and more of Sacramento County, including Rancho Cordova, added.
California’s new 6th district is now comprised of Rocklin, Roseville, Citrus Heights, much of North and East Sacramento, and the city of West Sacramento. Democratic Rep. Ami Bera currently represents the district, but will be running for the new 3rd district in 2026.
Other declared candidates for the 6th district include Democrats Lauren Babb Thomlinson, Thien Ho, Richard Pan, Kindra Pring, Tyler Vandenberg, and Republicans Christine Bish, Craig DeLuz, and Raymond Riehle.
Kiley was first elected to the House in 2022 and was reelected in 2024.
SAN RAMON, Calif. (KGO) — An earthquake with a preliminary magnitude of 3.4 struck near San Ramon at 11:21 p.m. Sunday, the U.S. Geological Survey said.
USGS said the tremor was about 8.4 km in depth.
According to the Geological Survey, people typically report feeling earthquakes larger than about magnitude 2.5.
The closer to the surface an earthquake occurs, the more ground shaking and potential damage it will cause.
No injuries have been reported.
This is the latest quake in San Ramon, which has seen multiple strings of tremors in the past several months.
Bay City News contributed to this report.
MAP: Significant San Francisco Bay Area fault lines and strong earthquakes
Zoom in on the map below and compare where you live to the significant faults and where strong earthquakes have struck in the Bay Area.
Stay with ABC7 News for the latest details on this developing story.
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