Los Angeles, CA – A series of small to moderate earthquakes rattled Southern California early Thursday, prompting residents from the Inland Empire to the Los Angeles basin to report feeling the tremors.
According to the California Integrated Seismic Network (CISN), four separate earthquakes were recorded within minutes of each other, with the strongest measuring magnitude 4.4. The seismic events began just before 8:00 a.m. local time, with the largest centered approximately 6 kilometers west of Muscoy, California, at a shallow depth of 5.3 kilometers.
Seismologists reported that the sequence started with a magnitude 2.8 quake at 8:42 a.m. UTC, followed by a 3.0 and a 3.1 event northwest of Rialto, and concluded with the 4.4 magnitude tremor at 9:32 a.m. UTC. All quakes were shallow, occurring less than 6.5 kilometers below the surface, increasing the likelihood of being felt by residents at ground level.
The United States Geological Survey (USGS) “Did You Feel It?” community reporting tool indicated dozens of responses from across San Bernardino and Riverside counties, with light to moderate shaking observed in the immediate area and minor tremors reported as far west as Los Angeles.
No immediate reports of injury or significant damage have been confirmed as of Thursday morning, but local emergency services have advised residents to remain vigilant for aftershocks. Earthquake preparedness officials recommend reviewing emergency kits and having a communication plan in place in case of larger events.
While California is no stranger to seismic activity, this morning’s cluster highlights the region’s ongoing vulnerability and the importance of readiness. Residents are encouraged to report their experiences to help scientists better understand how these quakes are felt throughout the region.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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