M4.9 Earthquake near South Atlantic Ocean — March 10, 2026
2026-03-10 23:26:47 UTC (2026-03-10) · approx. 9:26 PM UTC-2 local
On March 10, 2026 at 23:26 UTC, a magnitude 4.9 shallow crustal earthquake struck near South Atlantic Ocean, at a depth of 10.0 km and coordinates -16.7225°, -23.4476°. This earthquake was detected by 59 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
-23.4476°E
Technical Information
Common Questions
How strong was the magnitude 4.9 earthquake near South Atlantic Ocean?
The magnitude 4.9 earthquake that struck near South Atlantic Ocean on March 10, 2026 at 23:26 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 -16.7225°, -23.4476°, which is near South 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: us7000s3ij). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, March 10, 2026). M4.9 Earthquake near South Atlantic Ocean — March 10, 2026. Retrieved May 12, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000s3ij/