3.7 preliminary magnitude earthquake hits off coast of San Francisco, USGS says

SAN FRANCISCO (KGO) -- A 3.7 preliminary magnitude earthquake struck off the coast of San Francisco, according to the U.S. Geological Survey.

The USGS says it was about three miles from the San Francisco Zoo and the depth of the quake was five miles.

There were no immediate reports of damage or injuries, according to the San Francisco Fire Department.

The epicenter was near the San Andreas Fault and the quake was mainly felt in San Francisco and on the Peninsula.

San Francisco Mayor Daniel Lurie says first responders have been out monitoring conditions following the earthquake.

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