BRAWLEY, Calif. (KABC) -- About 300 small- to moderate-sized earthquakes struck in and around the Imperial County city of Brawley near the U.S. Mexico border Sunday, U.S. Geological Survey seismologists said.
The strongest of the temblors were magnitudes 5.5 and 5.3, said Robert Graves of the USGS. There were many in the four range and more than 30 with a magnitude of 3.5 and larger.
The earthquakes were expected to continue Sunday and there was no estimate for when the shaking might end.
There were no immediate reports of injuries or significant damage.
The largest temblor struck four miles north of the small farming town of Brawley around 1:57 p.m. More than a dozen quakes followed, including one that measured in at 4.3, according to the USGS.
Earlier in the day, a 5.3-magnitude quake hit the same place around 12:31 p.m. The Imperial Valley area was shaken by several noticeable temblors, ranging from magnitude 2.0 to 4.5, in the morning, starting around 10:00 a.m.
It was unclear what fault the quake cluster was on, but it was in the Brawley Seismic Zone near the San Andreas and Imperial faults.
"The message here, if nothing else, make sure you're prepared," Graves said.
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(Sources - http://abclocal.go.com)
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