Another One! Earthquake Rattles Southern California

Southern California was struck by a magnitude 4.0 earthquake on Saturday morning.

Good morning Southern California! Did you feel the magnitude 3.9 quake about 3 miles southeast of Ontario at 10:34 am? The #ShakeAlert system was activated. See: https://t.co/owsXYYHedY @Cal_OES @CAGeoSurvey @USGS_Quakes @ListosCA pic.twitter.com/qQXM9spkAm

— USGS ShakeAlert (@USGS_ShakeAlert) September 7, 2024

Shaking was felt across Los Angeles, Orange County and Riverside Counties.

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