Southern California was struck by a magnitude 4.0 earthquake on Saturday morning.
Good morning Southern California! Did you are feeling 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 throughout Los Angeles, Orange County and Riverside Counties.
A magnitude 3.5 earthquake first struck close to Ontario at 10:05 am native time adopted by a 4.0 quake at 10:34 am native time.
No experiences of damage or harm.
Welp! Seems that little M3.5 was a foreshock, as a result of we simply felt a M3.9 earthquake right here in northern Orange County. We additionally obtained a @MyShakeApp alert! Appears like we now have a brand new most magnitude for this space of the Fontana Pattern. #earthquake #Ontario pic.twitter.com/w9DbkGTH9K
— Brian Olson ️ (@mrbrianolson) September 7, 2024
Seismologist Dr. Lucy Jones weighed in on the most recent quakes to strike Southern California.
At this time we’re having a small swarm within the Fontana Seismicity Lineation, a northeast-striking line of many small quakes. At this time we now have to date M3.9, M3.5 and lots of M1s and M2s. I’ve seen this tyoe of cluster in Fontana dozens of occasions in my many years watching SoCal quakes.
— Dr. Lucy Jones (@DrLucyJones) September 7, 2024
I used to be going to argue concerning the most magnitude remark, positive that I remembered larger ones up to now. However I searched the catalog and the biggest quake of the final 90 years is similar M3.9 in 1953 https://t.co/IkzsjRBj82
— Dr. Lucy Jones (@DrLucyJones) September 7, 2024
Though a magnitude 4.0 quake is taken into account comparatively small for California, the variety of temblors which have hit the area this yr is troubling.
Two sizable earthquakes struck Southern California final month.
I felt this quake for a change. A M5.2 positioned on the southern finish of the Central Valley. It’s close to the White Wolf fault that produced a M7.5 in 1952 however doesn’t seem like on that fault.
— Dr. Lucy Jones (@DrLucyJones) August 7, 2024
I missed feeling this quake – I used to be parking the automobile at a grocery retailer. This was a M4.4 in South Pasadena, primarily the identical location because the M3.4 on June 02.
— Dr. Lucy Jones (@DrLucyJones) August 12, 2024
