Many of California's largest cities lie near fault lines, a particular danger when encountering the under-studied "supershear" quakes.
A 4.9-magnitude earthquake and several aftershocks rattled Southern California on Monday night, according to the United States Geological Survey. The first and largest quake happened approximately ...
A 3.2-magnitude earthquake rattled Southern California on April 15, 2026, with the epicenter located 56 kilometers from Santa Barbara.