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All Shook Up: 4.5 Earthquake Rattles Southland Last Night

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Maybe you thought it was your upstairs neighbor doing some late-night exercises, or you were too busy jumping up and down while watching the Olympics to have even noticed, but last night at 11:23 p.m. a 4.5 magnitude earthquake had Orange and L.A. County residents a little shook up.

The earthquake was centered 2 miles from Yorba Linda, according to the USGS, and was followed soon after by a series of aftershocks, including one just a minute later that registered 2.7.

In Los Angeles, the Fire Department completed a city-wide procedural assessment just after midnight, and reported no injuries or significant damage. The Orange County Fire Department reported the same.

Of course, many people turned to Twitter to share their quake experience:

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UPDATE 9:47 AM: A 4.1 earthquake struck the same area at 9:33 Wednesday morning. More info here.