A 4.4-magnitude earthquake centered just west of Muscoy, and north of San Bernardino, rattled Southern California at 9:32 a.m. on Thursday, July 31, according to the United States Geological Survey. It some areas, it lasted just a couple of seconds and was gentle. Elsewhere, it went on much longer.

A preliminary magnitude-4.4 earthquake in the San Bernardino area produced shaking that was felt over widespread parts of Southern California. The quake, reported at about 9:30 a.m., was one of four of magnitude-2.5 or greater in the area, which includes the communities of Muscoy and Rialto.

A light, 4.3-magnitude earthquake struck in Southern California on Thursday, according to the United States Geological Survey. The temblor happened at 9:32 a.m. Pacific time about 4 miles west of Muscoy,

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