M4.1 Earthquake 253 km WNW of Longyearbyen, Svalbard and Jan Mayen — February 12, 2021
2021-02-12 20:19:10 UTC (2021-02-12) · approx. 8:19 PM UTC+0 local
On February 12, 2021 at 20:19 UTC, a magnitude 4.1 shallow crustal earthquake struck 253 km WNW of Longyearbyen, Svalbard and Jan Mayen, at a depth of 10.0 km and coordinates 78.9646°, 4.7633°.
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
4.7633°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Longyearbyen, Svalbard and Jan Mayen?
The magnitude 4.1 earthquake that struck 253 km WNW of Longyearbyen, Svalbard and Jan Mayen on February 12, 2021 at 20:19 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: us6000djbl). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, February 12, 2021). M4.1 Earthquake 253 km WNW of Longyearbyen, Svalbard and Jan Mayen — February 12, 2021. Retrieved April 23, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000djbl/