According to the U.S. Geological Survey, the quake's epicenter was just off the coast and caused light shaking in some parts of the North Coast area, including Ferndale and Eureka.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/57-earthquake-strikes-northern-california
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/los-angeles-times
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-disasters
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/earthquakes
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/california
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us