A series of small earthquakes shook the San Francisco Bay Area on Thursday, according to the United States Geological Survey. The earthquakes all struck near Hayward, Calif., just south of Oakland. A minor,

The 1956 earthquake was a mainshock–aftershock sequence, with aftershocks lasting at least eight months after the mainshock. However, the current ongoing seismic activity near Santorini, at least as of February 7, features thousands of earthquakes, many with magnitudes ranging between 4.0 and 5.0.

A series of small earthquakes rattled the San Francisco Bay Area late Thursday morning, adding another challenge to what is already a busy day battling nature in the region.