Keywords: Ferndale Eureka RegionHistoricSeismicity.jpg en Dots are from 1985-2003 earthquakes with magnitude greater than 2 near Eureka and Ferndale in northern California Major roads in white; known active faults in brown Green boxes refer to active plate interations G-NA Gorda/North America Plates G-P Gorda/Pacific Plates and P-NA Pacific/North America Plates http //woodshole er usgs gov/operations/obs/rmobs_pub/html/mendocino html United States Geological Survey 2005 PD-USGov 40 21 47 84 N 124 24 33 05 W region US Maps of Humboldt County California Earthquakes in California Ferndale California |