A 4.3 magnitude earthquake rattles Southern California No Comments Uncategorized A magnitude 4.3 earthquake struck Southern California on Friday evening, according to the US Geological Survey. A magnitude 4.3 earthquake struck Southern California on Friday evening, according to the US Geological Survey. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to print (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on WhatsApp (Opens in new window)