'Every earthquake makes another earthquake more likely,' one seismologist said. But the quakes Thursday and Friday occurred along different fault lines than the San Andreas fault.
."Yesterday's 6.4 is now a foreshock, and that 7.1 aftershock has become the main shock."
Seismologists said after the Thursday quake that its occurrence didn't move the needle with respect to the"Big One" — shorthand forthat would strike along the southern San Andreas Fault, which slices through California like a scar. Still, scenes of people taking cover, objects tumbling off shelves and walls, and roadways cracked have punctuated fears that at any moment, the"Big One" could strike.
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