A Small Earthquake Shook Lake County, CA — Here’s What You Should Know

A Little Quake Near Cobb

On Thursday afternoon, a small earthquake hit near Cobb in Lake County, California.

• It was a preliminary 2.3 magnitude quake (magnitude is just a number that tells us how strong the shaking was).
• It happened at 3:51 p.m.
• The quake started 1 mile deep underground.
• Its starting point (called the epicenter) was about 4 miles west of Cobb.
• This info comes from the U.S. Geological Survey (USGS), the government team that tracks earthquakes.

Important: A 2.3 magnitude quake is very small. Most people may barely notice it.

Did You Feel It?

If you felt the shaking, you can tell the scientists about it!

• Visit the USGS Felt Report form to submit your experience.
• This helps researchers learn how far the quake was felt.

Two Similar Quakes Last Week

In the past week, the same area had two slightly stronger shakes:

• Both were 2.7 magnitude (a bit stronger than the 2.3 one).
• One hit near The Geysers on July 10.
• The other was near Cloverdale on July 15.

What to Know About Earthquakes

Let’s learn some earthquake basics in a super simple way:

• Magnitude = how much energy the earthquake releases at its source.
• It replaced the old “Richter scale” (an older way to measure quakes).
• Quakes between 2.5 and 5.4 are often felt but rarely cause much damage.
• Quakes below 2.5 are seldom felt by most people.

Earthquakes can cause:

• Fires
• Tsunamis (big ocean waves)
• Landslides
• Avalanches (snow sliding down)

They can happen anywhere, but are most common in:

• Alaska
• California
• Hawaii
• Oregon
• Puerto Rico
• Washington

Every year around the world:

• 500,000 earthquakes are detectable
• 100,000 can be felt
• 100 cause damage

What to Do During an Earthquake

If the ground starts shaking, protect yourself right away. Here’s what experts say:

1. If you’re in a car: Pull over, stop, and set your parking brake.
2. If you’re in bed: Turn face-down and cover your head with a pillow.
3. If you’re outdoors: Stay away from buildings. Don’t go inside.
4. If you’re inside: Stay inside. Don’t run out. Stay away from doorways.

The Golden Rule: Drop, Cover, and Hold On

• Drop down to your hands and knees.
• Hold onto something sturdy.
• Cover your head and neck with your arms.
• Crawl under a sturdy table if you can.
• If no table, crawl to an interior wall away from windows.
• If in a wheelchair or walker with a seat, lock wheels and stay seated.
• Hold on with one hand and move with the table if it shifts.

Heads-up: After a quake, watch for dangers like building damage, leaking gas, water lines, or downed power lines. Expect aftershocks (smaller quakes after the main one) and be ready to Drop, Cover, and Hold On again.

Summary

A tiny 2.3 magnitude earthquake struck near Cobb, CA at 3:51 p.m. on Thursday, about 1 mile deep. Two 2.7 quakes also hit the area last week. Earthquakes are measured by magnitude, and small ones (under 2.5) are rarely felt. If you feel one, remember to Drop, Cover, and Hold On, and watch out for aftershocks and damage afterward.

FAQ

Q: What does magnitude mean?
A: Magnitude is a number that shows how much energy an earthquake releases. Bigger number = stronger quake.

Q: Are 2.3 magnitude earthquakes dangerous?
A: Usually no. They are small, often barely felt, and rarely cause damage.

Q: What should I do if I feel an earthquake at home?
A: Stay inside, drop to your hands and knees, cover your head, and crawl under a sturdy table if possible. Hold on until shaking stops.

Q: Why should I report if I felt a quake?
A: Reporting to USGS helps scientists map where the quake was felt and learn more about it.

Source: The U.S. Geological Survey. This article was generated by the CA Earthquake Bot, which uses data and journalist-made templates. No human journalist was harmed. Originally published July 16, 2026 at 3:55 PM.