4.3-magnitude earthquake — then dozens more — rattles California lake, USGS says
A 4.3-magnitude earthquake jolted a lake shoreline Friday, July 11, in Southern California, the U.S. Geological Survey reported.
Then dozens of smaller quakes followed.
The 6.5-mile-deep quake hit more than 7 miles from Calipatria at 2:55 a.m., according to USGS.
More than 30 people from as far away as Carlsbad and Whittier reported feeling the tremor to the agency.
The quake hit off the coastline of the Salton Sea, according to seismologists.
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More than a dozen smaller quakes hit the area hours before the larger quake. Then dozens followed.
Calipatria has an estimated population of about 6,500 as of 2024, according to the U.S. Census Bureau.
People commented on a Facebook post about the earthquake, with many reporting they didn’t feel it.
“Not felt one. Slept the whole night,” one person said.
“I couldn’t tell if I was dreaming or rolling in the quake. I only felt the one,” another person said.
“Didn’t feel a thing!” someone else commented.
What to know about earthquakes
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:
If you’re in a car: Pull over and stop. Set your parking brake.
If you’re in bed: Turn face-down and cover your head with a pillow.
If you’re outdoors: Stay away from buildings. Don’t go inside.
If you’re inside: Stay and don’t run outdoors. Stay away from doorways.
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.”
