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4.5 Quake Off S. Oregon Coast After A Week of Smaller Ones

Published 12/21/25 at 6:55 p.m.
By Oregon Coast Beach Connection Staff


(Coos Bay, Oregon) – A magnitude 4.5 underwater quake hit off the south Oregon coast early this morning, and it turns it's just the latest in a string of small ones that shook nearly 200 miles away. Quakes in this region are not uncommon, but it's interesting to see a run of them.

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According to the United State Geological Survey (USGS), the most recent was at 1:57 a.m. this morning (December 21). The magnitude 4.5 earthquake struck 174 miles west-northwest of Bandon. The quake occurred at a depth of 6.2 miles at 43.785°N, 127.769°W.

One person in Eureka, California reported feeling it.

On December 20, a magnitude 4.3 earthquake occurred off the Oregon coast at 6:05 a.m. PST . The USGS said the event was centered near 43.797°N, about 195.5 miles ESE of Bandon and 201 miles east of Coos Bay.

The previous week, a magnitude 3.2 earthquake was recorded 116 miles west-southwest of Port Orford at 5:19 p.m. PST on December 17. It struck at a depth of 6.2 miles at 42.365°N, 126.725°W.

The first of the recent bunch was a magnitude 3.2 earthquake occurred 132 miles west-southwest of Pistol River at 9:26 p.m. PST on Dec. 15. The quake originated at a depth of 6.2 miles.

Offshore quakes in this area are extremely common, going through dozens a year.


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The seismic activity was located about 200 miles from Coos Bay and at least 213 miles from Newport, well offshore and away from populated areas. No damage or tsunami threat was reported.

Oregon, Coast Earthquake Updates - Live Data Oregon, Washington, California, Tsunamis

These quakes occurred within a known cluster of faults near the Gorda Ridge and Blanco Fracture Zone, a seismically active region that experiences multiple events annually. Experts emphasize that activity in this zone is not directly linked to the nearby Cascadia Subduction Zone, a much larger fault system capable of producing catastrophic earthquakes.

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