The first quake struck at 9:18 p.m. Friday with magnitude of 2.2. It was followed by multiple magnitude-3.3 quakes in the ...

The U.S. Geological Survey reported two earthquakes with preliminary magnitudes of 3.5 and 3.0 ​hit near the San Bernardino ...

Over a dozen quakes clustered in or near Tres Pinos, in San Benito County, were recorded with a range of magnitudes between 2 ...

Magnitudes are based on a logarithmic scale (base 10). What this means is that for each whole number you go up on the magnitude scale, the amplitude of the ground motion recorded by a seismograph goes ...

Officials with the U.S. Geological Survey confirmed four earthquakes with magnitudes ranging from 2.7 to 3.7 hit in the East ...

Scientists have detected several thousand earthquakes, the vast majority of them with small magnitudes, in just over two ...

A series of several small earthquakes struck inland of the Central Coast over the course of several hours starting Friday night and continuing into Saturday morning.