A 3.4 magnitude earthquake shook overnight near Santa Rosa in Northern California, the U.S. Geological Survey reported.
The nearly 4-mile deep quake hit about 7 miles southeast of Middletown at 12:01 a.m. Tuesday, according to the USGS.
More than 150 people from as far away as Fairfax and Hidden Valley Lake reported feeling the tremor to the agency.
“Wow! That was a pretty good shake,” a user said on X, formerly known as Twitter. “Longer than most of the earthquakes up here.”
Another user also commented on how strong the quake felt.
“Just a 3.4M, but it sounded & felt stronger, (because) it was almost directly beneath us,” the user said.
Magnitude measures the energy released at the source of the earthquake, the U.S. Geological Survey says. It replaces the old Richter scale.
Quakes between 2.5 and 5.4 magnitude are often felt but rarely cause much damage, according to Michigan Tech. Quakes below 2.5 magnitude are seldom felt by most people.
Earthquakes’ sudden, rapid shaking can cause fires, tsunamis, landslides or avalanches. They can happen anywhere, but they’re most common in Alaska, California, Hawaii, Oregon, Puerto Rico and Washington, according to the Department of Homeland Security.
If an earthquake strikes, it’s best to protect yourself right away. Here are tips from experts:
The best way to protect yourself during an earthquake is to drop, cover and hold on, officials say.
“Wherever you are, drop down to your hands and knees and hold onto something sturdy,” officials say. “If you’re using a wheelchair or walker with a seat, make sure your wheels are locked and remain seated until the shaking stops.”
Be sure to cover your head and neck with your arms, and crawl under a sturdy table if possible. If no shelter is available, crawl to an interior wall away from windows.
Once under a table, officials say you should hold on with one hand and be ready to move with it.
“There can be serious hazards after an earthquake, such as damage to the building, leaking gas and water lines, or downed power lines,” officials say. “Expect aftershocks to follow the main shock of an earthquake. Be ready to Drop, Cover, and Hold On if you feel an aftershock.”
