Light mag. 3.9 Earthquake – Contra Costa County, 30 miles east of Oakland, Alameda County, California, United States, on Saturday, December 20, 2025, at 06:31 PM (GMT -8)

Contribute: Leave a comment if you found a particular report interesting or want to add to it. Mark as inappropriate. Mark it as useful or interesting. Submit your user report!

San Mateo (42.4 km west of the epicenter) [Map] / Very weak shaking (MMI II) / Horizontal (sideways) sway / 10-15 seconds: At first I felt like I was dizzy. He swayed very slowly on the dining room chair. The table seems to be moving a little. The little hanging decorations were swaying so gently.

San Ramon, California (1.8 km northeast of the epicenter) [Map] / Mild shaking (MMI IV): Sitting at home. reading. Sounded like a truck coming down the road – house shook – TV and Christmas tree swayed and glasses could be heard in the closet

Hayward, California (15.6 km WNW of the epicenter) [Map] / Weak vibration (MMI III) / Horizontal (sideways) sway / 2-5 seconds: Shake the sofa and the New York dog. Same as yesterday 3 earthquakes | One user found this interesting.

Pleasanton (42.4 km west of the epicenter) [Map] / Moderate shaking (MMI V) / Single side shaking / Very short: Very sharp strong shaking | One user found this interesting.

San Leandro, California (20.9 km WNW of the epicenter) [Map] /Very weak shaking (MMI II) /One vertical bump/Very brief: It felt like someone was rocking you back and forth | One user found this interesting.

Clayton (21.1 km north of the epicenter) [Map] / Weak vibration (MMI III) / 2-5 seconds: Weak slight vibration!

Union City (45.8 km south of the epicenter) [Map] / Very weak vibration (MMI II) / Rattling and shaking / 2-5 seconds

1734 Alameda Diablo, Diablo, CA 94528 (4.8 km northwest of the epicenter) [Map] / Moderate vibration (MMI V) / One side vibration / 1-2 seconds

Fremont, Alameda, California (24.4 km south of the epicenter) [Map] / Moderate vibration (MMI V) / Rattling, vibration / 2-5 sec

Walnut Creek, California (20.6 km northwest of the epicenter) [Map] / Mild shaking (MMI IV) / Horizontal (sideways) sway / 5-10 seconds: I was shaking in my bed during naps. You woke me up

Jack London (30.5 km west of the epicenter) [Map] / Very weak shaking (MMI II) / Single side shaking / 1-2 seconds: Felt around 6:32 p.m.

Dublin California (26.6 km northwest of the epicenter) [Map] / Weak vibration (MMI III) / Single sideways vibration / 2-5 seconds: Slight sideways movement for about 2 to 5 seconds that felt as strong as 2 to 3 degrees

Oakland, California Coliseum (21.8 km west of the epicenter) [Map] / Weak vibration (MMI III) / Horizontal (sideways) sway / 2-5 seconds

Concord (14.3 km WNW of the epicenter) [Map] / Mild vibration (MMI IV) / Rattling, shaking / 2-5 seconds: While sitting on the couch, I felt my butt shaking. My birds became afraid.

Fremont, California (45.9 km south of the epicenter) [Map] / Weak vibration (MMI III) / 1-2 sec

Livermore (16.8 km ENE of the epicenter) [Map] / Mild vibration (MMI IV) / 1-2 seconds

Emeryville (29.8 km west of the epicenter) [Map] /Very weak vibration (MMI II)

286 Lenox Street, Oakland (29.8 km WNW of the epicenter) [Map] / Mild vibration (MMI IV) / Very short: Very weak vibration

Auckland (45.8 km south of the epicenter) [Map] / Mild vibration (MMI IV) / Single side vibration / 1-2 seconds

Diablo, Contra Costa, California (6.2 km north of the epicenter) [Map] / Weak vibration (MMI III) / Rattling and shaking / 2-5 seconds

San Francisco (42.3 km west of the epicenter) [Map] / Weak vibration (MMI III) / Rattling, vibration / 2-5 seconds: Weak vibration

San Francisco (42.4 km west of the epicenter) [Map] /Very weak vibration (MMI II)

Alameda (19.3 km west of the epicenter) [Map] / Weak vibration (MMI III) / Horizontal (sideways) sway / 1-2 sec

Pacifica, San Mateo (47.4 km WNW of the epicenter) [Map] /Very weak vibration (MMI II) (reported through our app)

94080 (39.4 km southwest of the epicenter) [Map] / Very weak vibration (MMI II) / Rattling and shaking / 1-2 seconds

Livermore (11.1 km southeast of the epicenter) [Map] / Mild vibration (MMI IV) / Single vertical bump / 1-2 seconds

Walnut Creek (20.7 km northwest of the epicenter) [Map] / Mild vibration (MMI IV) / Vertical and horizontal oscillation / 2-5 seconds

Alameda, California (26.1 km west of the epicenter) [Map] / Very weak shaking (MMI II) / Single side shaking / Very short: A short, quick shaking was felt in the east end of Alameda, CA

Fremont, California (25 km south of the epicenter) [Map] / Weak shaking (MMI III) / Vertical and horizontal swaying / 5-10 seconds: I was on my bed, he moved very suddenly. As if someone jumped in. It shook for a few seconds.

Alameda, California (15.5 km southwest of the epicenter) [Map] / Very weak vibration (MMI II) / Single vertical bump / Very short: Fast bump

Pleasanton (11.3 km southeast of the epicenter) [Map] / Mild vibration (MMI IV) / Rattling, shaking / 2-5 seconds

Show more

Note: Only reports that contain latitude and longitude coordinate locations (100 in total) can be used for statistics.

What is intensity and the Mercalli intensity scale? The amount of shaking that occurs on the surface due to an earthquake is called the intensity. It is usually measured on the so-called Modified Mercalli Intensity Scale (MMI) ranging from 1 (imperceptible) to 10 (severe shaking), and is given in Roman numerals such as I, II,…IX, X, and is often displayed with color codes ranging from light blue to dark red. The intensity of an earthquake depends mainly on the size and depth of the earthquake as well as the distance from the epicenter: the farther away, the less intense the shaking. Read more about the MMI scale!

Notes

Reports are filtered to exclude reports that are likely to be inaccurate or greatly exaggerated. Only reports with latitude and longitude coordinate positions (100 in total) can be used for geographic statistics.

What Are The Main Benefits Of Comparing Car Insurance Quotes Online

LOS ANGELES, CA / ACCESSWIRE / June 24, 2020, / Compare-autoinsurance.Org has launched a new blog post that presents the main benefits of comparing multiple car insurance quotes. For more info and free online quotes, please visit https://compare-autoinsurance.Org/the-advantages-of-comparing-prices-with-car-insurance-quotes-online/ The modern society has numerous technological advantages. One important advantage is the speed at which information is sent and received. With the help of the internet, the shopping habits of many persons have drastically changed. The car insurance industry hasn't remained untouched by these changes. On the internet, drivers can compare insurance prices and find out which sellers have the best offers. View photos The advantages of comparing online car insurance quotes are the following: Online quotes can be obtained from anywhere and at any time. Unlike physical insurance agencies, websites don't have a specific schedule and they are available at any time. Drivers that have busy working schedules, can compare quotes from anywhere and at any time, even at midnight. Multiple choices. Almost all insurance providers, no matter if they are well-known brands or just local insurers, have an online presence. Online quotes will allow policyholders the chance to discover multiple insurance companies and check their prices. Drivers are no longer required to get quotes from just a few known insurance companies. Also, local and regional insurers can provide lower insurance rates for the same services. Accurate insurance estimates. Online quotes can only be accurate if the customers provide accurate and real info about their car models and driving history. Lying about past driving incidents can make the price estimates to be lower, but when dealing with an insurance company lying to them is useless. Usually, insurance companies will do research about a potential customer before granting him coverage. Online quotes can be sorted easily. Although drivers are recommended to not choose a policy just based on its price, drivers can easily sort quotes by insurance price. Using brokerage websites will allow drivers to get quotes from multiple insurers, thus making the comparison faster and easier. For additional info, money-saving tips, and free car insurance quotes, visit https://compare-autoinsurance.Org/ Compare-autoinsurance.Org is an online provider of life, home, health, and auto insurance quotes. This website is unique because it does not simply stick to one kind of insurance provider, but brings the clients the best deals from many different online insurance carriers. In this way, clients have access to offers from multiple carriers all in one place: this website. On this site, customers have access to quotes for insurance plans from various agencies, such as local or nationwide agencies, brand names insurance companies, etc. "Online quotes can easily help drivers obtain better car insurance deals. All they have to do is to complete an online form with accurate and real info, then compare prices", said Russell Rabichev, Marketing Director of Internet Marketing Company. CONTACT: Company Name: Internet Marketing CompanyPerson for contact Name: Gurgu CPhone Number: (818) 359-3898Email: [email protected]: https://compare-autoinsurance.Org/ SOURCE: Compare-autoinsurance.Org View source version on accesswire.Com:https://www.Accesswire.Com/595055/What-Are-The-Main-Benefits-Of-Comparing-Car-Insurance-Quotes-Online View photos