Southern California earthquake swarm: 54 quakes in five hours, magnitude 3 to 4.9

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A swarm of earthquakes, the largest magnitude 4.9, rattled Southern California near the Salton Sea on Wednesday evening. No damage or injuries were reported.

More than 90 quakes struck between 4 p.m. and 8:40 p.m. in remote Imperial County, according to the U.S. Geological Survey. Fifty-four of them were magnitude 3 or 4.

The 4.9-magnitude temblor hit just after 5:30 p.m. and was centered 2½ miles northeast of Westmorland, a city of around 2,300 people near the Salton Sea. It was felt in communities along the U.S.-Mexico border and throughout San Diego.

It was California’s largest quake since a 5.8 near Lone Pine on June 24.

Seismologist Lucy Jones said the quakes were in the Brawley seismic zone, where such swarms are common. A similar swarm in early August topped out at magnitude 4.6.

The zone, which produced a magnitude-5.8 earthquake in 1981, is a network of small faults connecting the Imperial and San Andreas faults.

— The Associated Press contributed to this report.

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Source:: The Mercury News – Latest News


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