Magnitude 5.2 earthquake rattles Southern California followed by over 50 aftershocks Fox Weather 57 earthquakes within 12 hours near Bakersfield KMPH Fox 26Massive boulder fell on 5 Freeway moments after 5.2 quake; stopped lanes through Grapevine KTLA Los AngelesAt least 3 lanes blocked due to large boulder on SB I-5 at Grapevine Road: CHP Bakersfield Now‘Robust aftershock sequence’ follows magnitude 5.2 quake in Southern California SFGATE