M4.2 Earthquake near southern Mid-Atlantic Ridge — June 15, 2025
2025-06-15 21:40:22 UTC (2025-06-15) · approx. 9:40 PM UTC+0 local
On June 15, 2025 at 21:40 UTC, a magnitude 4.2 shallow crustal earthquake struck near southern Mid-Atlantic Ridge, at a depth of 10.0 km and coordinates -55.6920°, -4.1508°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-4.1508°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near southern Mid-Atlantic Ridge?
The magnitude 4.2 earthquake that struck near southern Mid-Atlantic Ridge on June 15, 2025 at 21:40 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000q9jl). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, June 15, 2025). M4.2 Earthquake near southern Mid-Atlantic Ridge — June 15, 2025. Retrieved August 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000q9jl/