Magnitude 4.2 earthquake near Isleton felt in Berkeley

Some Berkeley residents felt a shake Wednesday morning when an earthquake hit the town of Isleton in the Sacramento Delta.

Others said they felt nothing at all.

The magnitude 4.2 quake occurred at 9:29 a.m. with a depth of about 6.7 miles, according to the U.S. Geological Service. (It was initially estimated as a magnitude 4.1.)

"Wife and I got alert 2 seconds before quake. Impressive!" one Berkeley resident wrote on the X platform, formerly known as Twitter.

"A good shake here in North Berkeley," wrote another.

Many people said they got an alert via the MyShake app but did not feel the earthquake.

A Scanner post on X about the quake has garnered dozens of replies — with some saying they were frustrated because they got the alert but felt nothing.

In early October, a small earthquake, magnitude 2.5, was recorded in Piedmont.

An earthquake in Berkeley in late July had an epicenter near Tunnel and Roble roads in the Claremont neighborhood with a magnitude of 2.6.

In April, a magnitude 3.7 earthquake was recorded between Clayton and Brentwood, south of Black Diamond Mines Regional Park.

Read more about earthquakes in Berkeley.

On April 1, two magnitude 3.0 earthquakes were recorded in San Leandro.

Ways to prepare for Berkeley earthquakes

The city of Berkeley has a number of tips and resources to help get ready for natural disasters. Take this opportunity to brush up.

Creating a Disaster Plan

Make an emergency plan with your household, neighbors, family, and friends. A little foresight can go a long way—make a plan now, so you know how to find and get in touch with your people when something happens. The same connections that are important in your everyday life—with your family, roommate…

City of Berkeley

Sign up for AC Alert for official emergency information

Sign up for text, email, and phone alerts that guide you to protective actions related to locations you care about, like your home, work, or kids’ schools. Sign up for AC Alert—Berkeley’s main emergency alerting system—to quickly know what protective actions you, your family, or your co-workers shou…

City of Berkeley

The UC Berkeley Seismology Lab is a also great resource for local earthquake information.