M4.1 Earthquake north of Svalbard — April 21, 2023
2023-04-21 20:57:56 UTC (2023-04-21) · approx. 8:57 PM UTC+0 local
On April 21, 2023 at 20:57 UTC, a magnitude 4.1 shallow crustal earthquake struck north of Svalbard, at a depth of 10.0 km and coordinates 80.8289°, -3.7374°.
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
-3.7374°E
Technical Information
Common Questions
How strong was the magnitude 4.1 earthquake north of Svalbard?
The magnitude 4.1 earthquake that struck north of Svalbard on April 21, 2023 at 20:57 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: us7000jwbt). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 21, 2023). M4.1 Earthquake north of Svalbard — April 21, 2023. Retrieved July 3, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000jwbt/