Caltech regularly produces animations that show how seismic energy traveled during certain earthquakes. The recent animations include the 3.9 quake that occurred on Saturday, June 20, lightly shaking all of Orange County.

CLICK HERE to play the animation.

The quake broke beneath the seafloor, about 50 miles off  San Clemente Island.  But it produced light shaking felt across Orange County.

Airborne radar to monitor quake threats in O.C.

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OC College Life blog …

• Chapman economists say state deficit is only half as big as the governor says
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Posted in: Ain't that interesting? • Earthquake news and research |

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