Source: https://mendocinocoast.news/5-6-earthquake-rocks-redwood-valley/
County now reports injuries, but no deaths
At 8:10 a.m., the dogs barked first — a frantic high pitched warning — and then Nixie came seconds after the dogs and then the house began to rock and roll in a long, rolling wave. We are in Cleone on the Coast 40 miles away from the inland epicenter. A 5.6 earthquake on the Richter scale (initial estimate) struck near Potter Valley, sending a sharp jolt through inland Mendocino County and a ripple of reports across the coast. Please email us at frankhartzell@gmail with specifics of what you felt. The quake lasted about 5 seconds and was followed by several smaller aftershocks.
We just had good news 1040 am from Melissa at Hopper’s Corner Market in Potter Valley. Though they felt the strong shaking, they suffered almost no damage. “We were fortunate. Just one bottle of soy sauce broke.” At least two grocery stores in Willits weren’t as fortunate (see below). Melissa had not heard of any injuries from the customers at the market but many stories of more than one bottle tumbling off shelves.
A powerline fell in Willits and there were 12 separate outages affecting about 4500 people, PGE reported. Gravestones were toppled in the cemetery. A radio transmitter was damaged for the first time ever. The old Rite Aid building suffered severe internal and external damage in Willits. We learned gas stations in Willits closed to inspect pumps for damage, grocery stores had widespread damage from tumbling items and we are still getting reports. There is no central information source in disasters in Mendocino County now. Still NOTHING on Mendo Ready two hours after the quake but at 11 am, the county put out info saying there had been no deaths but some injuries.
I found out that MendoReady was never going to tell me about the earthquake because i live in Fort Bragg and what I thought was the main page but no, it’s tailored for me and they don’t think I need to know, even though we might have been headed there today. When I clicked on the map of Willits, i got this terse info only.
“Advisory 5.6 Earthquake near Redwood Valley/Willits. Be prepared for aftershocks. Drop, Cover and Hold. Report Damages to Survey on MendoReady.org.”
This is from the Mendocino County Executive Office, which gave the first report three hours after the event. It says people were injured but we haven’t been able to find out who or where:
Mendocino County, CA11:01 AM to me
June 24, 2026 Earthquake
Post Date:06/24/2026 11:00 AM
June 24, 2026 Earthquake
The County of Mendocino Emergency Operations Center is open and in monitoring status. At this time, there are no known major damages, but we are working with our operational area partners to continue to assess damages.
Some injuries have been reported, but no deaths.
PG&E has reported power outages with over 6000 residents without power, in Willits, Laytonville, Leggett, Round Valley/Covelo.
In the interim, the County encourages residents to stay off major roadways to allow for Caltrans, PG&E and County workers to perform damage inspection and repairs.
For more information, or to report damages in your area, visit MendoReady.org.
From Facebook
This map shows where the earthquake was likely to be felt.
Within minutes, the MCN Listserve lit up with posts from Westport, Cleone, Caspar, Comptche, Little River, and the town of Mendocino, all describing the same sudden, unmistakable shake. Some felt a single hard jolt; others reported a rolling motion that seemed to move under the floorboards.
“Felt in Manchester near Hwy 1, initial bump and then a roll. No pics askewnor windows rattling, but my 100-year-old bungalow creaked and groaned abit.” Beverly Smith reported on the Listserve.
Report from Devora Stern from the mountaintop outside Willits
“Hey, I am northeast of town, but in town stuff was flying off the grocery outlet shelves glass was breaking. The power went out for a second. They cleared the store. Downtown peoples earth is moving stuff is flying out of the cupboards. It was the longest one anybody felt. I was playing with my chickens so I didn’t feel a thing, but the gas stations have closed down due to worrying about danger at the pumps
The Traffic LIghts are not working . Traffic is backed up. It’s a big thing in Willits.”
The earthquake registered 5.6 on the Richter scale, but the Richter scale is very flawed.
The Richter scale doesn’t tell the whole story because it only measures the maximum amplitude of seismic waves at specific frequencies from a single type of seismograph. It ignores the total physical energy released, duration, local geological conditions, and how the earthquake’s shaking is experienced by buildings and people – from Wikipedia.
Jim Heid reported to us
“My KZYX radio partner lives in Redwood Valley. He wrote to me:“the whole house shifted back-and-forth about a foot and a half, stuff fell off the walls and shelves, but everything held together, no apparent damage, water, and electricity still working OK.”
Carol Lillis gave a specific report on how it felt.
“We felt quite a jolt in Albion. Our house is about 50 feet from the edge of a bluff and our glass doors rattled so hard I thought they would shatter. I held on tight to the kitchen counter. Our home is built on rock and that was quite a bounce.”
There were 2500 outages in Willits, PGE reported and 1500 more in unincorporated areas.
Friend Bill Kubran in Redwood Valley 8 miles from the epicenter. The shaking was dramatic for 5 seconds but nothing even fell off the shelves. “it felt like the house moved 5 or 6 feet back and forth and it lasted a long time, maybe 5 or 6 seconds,” Kubran said. The Kubrans suffered no damage.
A friend in Okie Valley, closer to the epicenter, had damage from falling items.
There were no tsunami warnings, as the earthquake was located far from the ocean.
What is the fault involved?
The Maacama Fault is a right lateral-moving (dextral) geologic fault located in the Coast Ranges of northwestern California. It is considered to be the northernmost segment of the Hayward Fault subsystem of the San Andreas Fault zone. Creep along the Maacama is about 8 mm per year, consistent with the steady movement along the rest of the Hayward Fault system. It is also capable of producing large earthquakes.[1][2]
The Maacama Fault runs just east of Ukiah and just west of Willits.
Here is an excellent scientific study with a map showing all the major faults in our area, including this one.
The geometry of fault reactivation and uplift along the central part of the Maacama Fault Zone, Northern California Coast Ranges (USA) | Geosphere | GeoScienceWorld
City of Fort Bragg Police Dept · was first agency to get out the word almost a full two hours before the county’s emergency dept and Mendo Ready . Big kudos to FBPD.
“We are aware of the earthquake and are actively monitoring the situation. At this time, no damage has been reported within the City of Fort Bragg. If you are injured or have an emergency call 911.
The city provided the following, which was a nice gesture, but Mendo Ready at that time.
“For the latest updates, emergency information, and preparedness resources, please visit Mendocino County’s emergency preparedness website at mendoready.org.
We encourage everyone to stay informed, be prepared, and follow official sources for accurate information.” END OF Quote from FBPD.
“I’m in Albion a mile and a half up the ridge. I live in a trailer, on tires, so the earthquake was magnified. I’d gotten back to sleep after letting the dog and cat out at 7, and was awakened by the rocking motion; like sleeping in a rocking chair, only the movement seemed side to side from the bed. (My head is to the west, and the rocking felt north to south, but that’s because the wheels face north and south.) I assumed it to be a large earthquake off Eureka, as they’ve had a few lately, ” Alison Gardner reported.
Useful info from Jim Heid
We learned three lessons in this event. 1. The animals warning about an earthquake thing is real. The dog barking came 10 seconds before the quake. The Nixie 5 seconds before. I never believed the animal warning stuff for sure till now.
In the event of a major quake or disaster or fire, there will be no information for you. In the age of social media, every last person insists on printing their own one sentence summary of the event and there is no way to provide information like we used to. KOZT had earthquake news we could all access, but any online newsite, such as ours, was buried in chatter and most people were interested in reading anything but their own experience.
The county’s emergency system is good for Nixie warnings and that’s it. No other info from the county. There really should be something set up before a major event where everyone can go and it has a live human in charge of updating it, not through robotics relying on others.
Media reports stating this was the largest earthquake north of SF since 1940 are false. There have been plenty along the Coast bigger than this. The most recent one was a 7.0 earthquake that hit in November 2024. We reported that one at the time. It created a shift in the big hill above Highway 1 in Westport that rushed a job already underway.
This was the other alert we got. Ours came before the quake. Others told us theirs came after
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