A magnitude 4.3 earthquake struck the San Francisco Bay Area early Monday at 2:56 a.m. The epicenter was in Berkeley, near the corner of Dwight Way and Piedmont Avenue, just a few blocks from UC Berkeley. The quake was felt broadly across Berkeley, Oakland, San Francisco, and even as far as Santa Rosa and Salinas. It caused a strong jolt that woke many people, some reporting shaking and rattling of their homes, but no injuries or significant damage have been reported so far. The USGS and local authorities advise preparedness for possible aftershocks, though the likelihood of major damage or casualties is low. The quake activated the MyShake early warning app and was on the Hayward fault line, one of the major faults in the region.