Portland, OR – A magnitude 5.4 earthquake struck off the Oregon coast Wednesday morning, the latest in a sequence of quakes recorded in the Pacific Ocean west of the state, according to the U.S. Geological Survey (USGS).
The quake occurred around 7 a.m. local time (14:00 UTC) at a depth of 10 kilometers, roughly 200 miles offshore. USGS reports confirm that this event follows a series of smaller tremors detected earlier in the week in the same region, suggesting continued seismic adjustment along an offshore fault zone.
Officials reviewed the quake as part of a broader pattern of moderate offshore activity that has not triggered any tsunami warnings. The U.S. Tsunami Warning System reported no current advisories, but residents are urged to remain alert to updates.
According to the USGS aftershock forecast, there’s a 3% chance of another quake of magnitude 5 or higher within the week, and a 59% chance of smaller aftershocks (magnitude 3 or greater).
So far, no damage or injuries have been reported along the Oregon coastline. Coastal residents who felt the shaking are encouraged to submit reports via the “Did You Feel It?” section on the USGS website.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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