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Magnitude 4.8 quake hits Southern California

LOS ANGELES — LOS ANGELES -- A magnitude-4.8 earthquake shook much of Southern California yesterday, causing a few cracks in buildings near the epicenter and sending some rocks onto a highway.

No injuries were reported in the temblor at 12:01 p.m., which scientists at the California Institute of Technology and the U.S. Geological Survey said was outside the aftershock zone of the 1992 Landers and Big Bear earthquakes and therefore was a separate seismic event.

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The temblor was also unrelated to the earthquake Jan. 17 in Los Angeles' San Fernando Valley that left 61 people dead.

Yesterday's jolt, centered between Lake Arrowhead and Big Bear, about 80 miles east of Los Angeles, occurred within five miles of the San Andreas fault.

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Seismologist Lucile M. Jones of the Geological Survey said it was "close enough to be a foreshock" of a large quake on California's most significant fault, but she put the probability of such a quake occurring in the next day or so at only 1 percent.


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