While all of the earthquakes measured 4 and below on the Richter Scale, smaller quakes often come ahead of bigger ones and concerns are mounting about the Big One, a hypothetical earthquake of magnitude 8 or greater that is expected to happen along the San Andreas Fault.
The name stems from a 1990 made-for-TV movie that depicts a huge earthquake that destroys all of Los Angeles.
The last few quakes along the San Andreas fault have measured 4.0, 3.1, 2.9, 2.8 and 2.6, and come just hours after a much larger 5.8 magnitude earthquake struck off the California coast.
The quake struck around 100 miles off the coastline of northern California and residents in Ferndale reported feeling the quake, but no damage or injuries have been reported.
The San Andreas fault which runs through the state is known to be particularly prone to earthquakes.
The state has been rocked by massive quakes multiple times over the years and the 1906 San Francisco earthquake and the tsunami and wildfires that followed claimed the lives of more than 3,000 lives.
California is located on the Ring of Fire, a huge area in the basin of the Pacific Ocean where earthquakes and volcanic eruptions frequently occur.
The Ring of Fire has been particularly volatile in recent days, with a series of large earthquakes recorded.
On Tuesday a 7.9 magnitude quake off the Alaskan coast prompted tsunami warnings for the whole US west coast as thousands of people in Alaska and parts of Canada rushed to emergency shelters.
Fortunately initial fears were quashed and the tsunami warnings were lifted but the increase in seismic activity has done nothing to quell fears about more major earthquakes.
There was also 6.1 earthquake off the coast of Java, Indonesia earlier this week which left more than 130 buildings damaged and caused a number of injuries.