M4.8 Earthquake near Reykjanes Ridge — October 10, 2021
2021-10-10 16:09:35 UTC (2021-10-10) · approx. 2:09 PM UTC-2 local
On October 10, 2021 at 16:09 UTC, a magnitude 4.8 shallow crustal earthquake struck near Reykjanes Ridge, at a depth of 10.0 km and coordinates 57.8576°, -32.7378°.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-32.7378°E
Technical Information
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Common Questions
How strong was the magnitude 4.8 earthquake near Reykjanes Ridge?
The magnitude 4.8 earthquake that struck near Reykjanes Ridge on October 10, 2021 at 16:09 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 57.8576°, -32.7378°, which is near Reykjanes Ridge.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us6000ftj4). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, October 10, 2021). M4.8 Earthquake near Reykjanes Ridge — October 10, 2021. Retrieved December 18, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000ftj4/