An earthquake with a preliminary magnitude of 3.7 struck the coast of San Francisco on Friday morning, the United States Geological Survey reported. The earthquake occurred about three miles ...
SAN FRANCISCO (AP) — An earthquake registering a magnitude of 3.7 shook part of the San Francisco Bay Area and people reported feeling a quick jolt. There were no immediate reports of injuries ...
Magnitude measures the energy released at the source of the earthquake, the U.S. Geological Survey says. It replaces the old Richter scale. Quakes between 2.5 and 5.4 magnitude are often felt but ...