M4.1 Earthquake 222 km WNW of Bandon, Oregon — March 31, 2023
2023-03-31 21:35:47 UTC (2023-03-31) · approx. 1:35 PM UTC-8 local
On March 31, 2023 at 21:35 UTC, a magnitude 4.1 shallow crustal earthquake struck 222 km WNW of Bandon, Oregon, at a depth of 10.0 km and coordinates 43.5956°, -127.0723°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-127.0723°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Bandon, Oregon?
The magnitude 4.1 earthquake that struck 222 km WNW of Bandon, Oregon on March 31, 2023 at 21:35 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000k18a). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, March 31, 2023). M4.1 Earthquake 222 km WNW of Bandon, Oregon — March 31, 2023. Retrieved June 3, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k18a/