A 5.9 magnitude earthquake was detected off the Oregon Coast Sept. 25.

The earthquake occurred at 11:45 p.m. approximately 143 miles off the coast of Bandon, and at a depth of 6.2 miles, according to the U.S. Geological Survey.

This incident comes just over two weeks after a 5.8 earthquake struck 102 miles off the Oregon Coast southwest of Port Orford Sept. 8.

There is currently no tsunami risk and, while aftershocks are predicted to follow, there is a 2% chance of any aftershocks larger than magnitude 5, according to USGS.

Anyone who may have felt the earthquake is encouraged to use the USGS’s “Did you feel it?” tool to report what they felt.

How Often Do Earthquakes Happen off the Oregon Coast?

Dozens of earthquakes happen off the Oregon Coast every year, but most go unnoticed.

Many earthquakes that occur offshore happen in the Blanco Fracture Zone. The Blanco Fracture Zone is an approximately 200-mile-long active fault system that runs northwest off the coast of Washington and Oregon along the Juan de Fuca Plate.

The Blanco Fracture Zone is one of the most seismically active faults and can produce hundreds of earthquakes each year. However, many of the Blanco Fracture Zone’s earthquakes are less than magnitude 3 and are only registered with a seismometer.

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Ginnie Sandoval is the Oregon Connect reporter for the Statesman Journal. Sandoval can be reached at GSandoval@gannett.com or on X at @GinnieSandoval.
This article originally appeared on Salem Statesman Journal: 5.9 magnitude earthquake hits off the Oregon Coast west of Bandon
Reporting by Ginnie Sandoval, Salem Statesman Journal / Salem Statesman Journal
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