Multiple Earthquakes Detected Off Oregon Coast

A series of earthquakes were detected over 200 miles off the Oregon Coast early in the morning on Saturday, June 22, the most intense registering at 5.4 on the Richter scale. 

The U.S. Geological Survey (USGS) recorded eight earthquakes between 5:45 a.m. until about 7:30 a.m. on Saturday morning, 222 miles west of Newport. The quakes ranged in magnitude from 3.2 to 5.4, with the most intense of them occurring earlier in the morning and gradually weakening. They were recorded relatively close to the surface, at 10 km (about 6 miles) depth.  

The National Tsunami Warning Center reports no risk of tsunamis from these earthquakes. 

 While not close enough to shore to cause any damage, a 5.4 magnitude quake relatively close to the surface can cause significant damage.   

These quakes occurred along the Blanco Fracture Zone, a fault zone located in the ocean immediately to the west of Oregon and Washington.  

By Ian MacRonald