At 8:02 Thursday morning, a relatively moderate earthquake measuring 5.9 on the Richter scale shook 183 miles off of the coast of Coos Bay, Oregon.
The quake was just over 6 miles deep and No Tsunami, Tsunami warning, advisory, watch, or threat was generated by this earthquake.
The magnitude 6.3 earthquake near the coast of Oregon occurred as the result of strike-slip faulting along the Blanco Fracture Zone, a transform fault marking the boundary between the Pacific Plate to the southwest and the Juan de Fuca Plate to the northeast.
At this location, the Juan de Fuca Plate slides past the Pacific Plate at a rate of 49 mm a year. The Juan de Fuca plate ultimately subducts beneath North America along the Cascadia subduction zone about 200 km to the east of today’s event
