Multiple Tremors, Including Magnitude 2.8 Earthquake, Recorded Near Cobb in Northern California

A magnitude 2.8 earthquake struck Northern California on April 12, 2026, part of a series of small quakes in the region.

The quake was recorded near Cobb at 10:27 a.m. PT, about 9 kilometers west-northwest of the community, according to the U.S. Geological Survey (USGS). It occurred at a depth of about 2.1 kilometers and was one of several low-magnitude earthquakes recorded in the area within hours.

No damage or injuries were reported, and there were no immediate “Did You Feel It?” reports submitted to the USGS. Nearby communities include The Geysers, Anderson Springs, and Kelseyville.

Multiple Tremors Record In the Cobb Area

A magnitude 1.1 quake was also recorded in the area early April 13 at about 1:43 a.m. PT. Multiple tremors ranging from magnitude 1.1 to 2.8 were recorded in the Cobb area over the same period.

Seismic activity was also recorded in The Geysers area, where multiple low-magnitude earthquakes occurred. Most of these quakes occurred at depths between about 0.6 and 3.1 kilometers and did not cause damage.

Frequent Earthquakes in The Geysers Area

According to the USGS, frequent earthquakes in The Geysers area are linked to both natural tectonic activity and human-driven factors. The region lies within a tectonically active zone near major fault systems, including the San Andreas Fault.

Geothermal energy production also contributes to smaller quakes. According to the USGS, extracting steam from underground reservoirs can cause surrounding rock to contract, creating stress changes that trigger seismic activity.

Despite the frequent activity, most earthquakes in the area remain low in magnitude and rarely cause damage. Seismic activity levels in the area have remained relatively stable since the mid-1980s, according to USGS data. The largest earthquake recorded in The Geysers area is approximately magnitude 4.5.

Safety Precautions

Residents in earthquake-prone areas are advised to follow basic safety measures. During shaking, people are advised to “Drop, Cover, and Hold On” to protect themselves from falling debris.

Securing heavy items such as shelves, televisions, and appliances can help reduce the risk of injury during a quake. After a quake, residents should check buildings for structural safety and consider earthquake insurance options.

Officials also advise not turning gas back on after it has been shut off, leaving that to professionals. Avoid using matches, lighters, or electrical devices until you are certain there are no gas leaks. Use phones only for emergencies to keep lines open, as emergency services may be overwhelmed following a major quake.