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The newly discovered Salton Trough Fault could be as long as 40 kilometers (about 25 miles), long enough to produce a large-magnitude quake. -
The U.S. Geological Survey reported two earthquakes, magnitudes 3.4 and 3.0, a week after a series of small jolts in the same area near the San Andreas fault. -
Californians will begin getting warnings of impending earthquakes through their cellphones, radios and other devices within the next year or two as the state ramps up a lifesaving early warning system. -
The first was a 3.2-magnitude temblor that hit at 6:14 a.m. near Niland. The second measured 3.0 and struck at 7:33 a.m., and the third had a magnitude of 3.1 and came at 8:48 a.m. -
A strong earthquake struck in southern Mexico on Monday afternoon, but there were no immediate reports of injuries or serious damage. -
For years, she has been the scientist a rattled Southern California has turned to when the earth shakes, explaining magnitudes, faults and other details. -
San Diego researchers are among those testing materials that could help make existing buildings more resistant to earthquakes. -
The app taps into smartphone accelerometers — sensors commonly used to detect movement and orient screens based on how users hold their phones — to pick up on earthquake tremors. -
New research shows that large earthquakes on one fault could jump to another causing widespread damage. -
The U.S. Geological Survey reported the quake struck at 12:19 p.m.
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