M4.9 Earthquake near North Atlantic Ocean — December 5, 2025
2025-12-05 11:50:23 UTC (2025-12-05) · approx. 8:50 AM UTC-3 local
On December 5, 2025 at 11:50 UTC, a magnitude 4.9 shallow crustal earthquake struck near North Atlantic Ocean, at a depth of 10.0 km and coordinates 6.9005°, -46.3014°. This earthquake was detected by 131 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-46.3014°E
Technical Information
Common Questions
How strong was the magnitude 4.9 earthquake near North Atlantic Ocean?
The magnitude 4.9 earthquake that struck near North Atlantic Ocean on December 5, 2025 at 11:50 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 6.9005°, -46.3014°, which is near North Atlantic Ocean.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: usd00144g2). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, December 5, 2025). M4.9 Earthquake near North Atlantic Ocean — December 5, 2025. Retrieved May 24, 2026 from https://www.earthquaketracker.org/earthquakes/event/usd00144g2/