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.
A magnitude 3.5 earthquake first struck near Ontario at 10:05 am local time followed by a 4.0 quake at 10:34 am local time.
No reports of injury or damage.
Welp! Turns out that little M3.5 was a foreshock, because we just felt a M3.9 earthquake here in northern Orange County. We also got a @MyShakeApp alert! Looks like we have a new maximum magnitude for this area of the Fontana Trend. #earthquake #Ontario pic.twitter.com/w9DbkGTH9K
— Brian Olson ️ (@mrbrianolson) September 7, 2024
Seismologist Dr. Lucy Jones weighed in on the latest quakes to strike Southern California.
Today we are having a small swarm in the Fontana Seismicity Lineation, a northeast-striking line of many small quakes. Today we have…
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