M4.4 Earthquake 163 km W of Port Orford, Oregon — September 9, 2025
2025-09-09 19:31:03 UTC (2025-09-09) · approx. 11:31 AM UTC-8 local
On September 9, 2025 at 19:31 UTC, a magnitude 4.4 shallow crustal earthquake struck 163 km W of Port Orford, Oregon, at a depth of 10.0 km and coordinates 42.5029°, -126.4682°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-126.4682°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.4 earthquake near Port Orford, Oregon?
The magnitude 4.4 earthquake that struck 163 km W of Port Orford, Oregon on September 9, 2025 at 19:31 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.4 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000qv3f). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 9, 2025). M4.4 Earthquake 163 km W of Port Orford, Oregon — September 9, 2025. Retrieved November 30, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qv3f/