More than 50 aftershocks from San Bernardino County earthquake

There have been more than 50 aftershocks since a magnitude 4.4 earthquake rattled Southern California on Tuesday evening.

The largest of the aftershocks has measured magnitude 3.8, but most were too small to be felt. U.S. Geological Survey scientist Lucy Jones said on Twitter on Wednesday that that number of aftershocks was normal for a 4.4 quake.

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The temblor occurred at 5:48 p.m. at a depth of 3.1 miles. The epicenter was near the town of Muscoy, six miles from Rialto, six miles from Fontana and seven miles from Crestline.

Maps by the USGS showed the quake was felt across a large swath of the region. It was most strongly felt in San Bernardino County.

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