A magnitude 5.0 earthquake occurred on the southern Mid-Atlantic Ridge at a depth of approximately 12 kilometers, according to the U.S. Geological Survey. The Mid-Atlantic Ridge is an underwater mountain chain that runs down the center of the Atlantic Ocean, marking where the North American and Eurasian plates (in the north) and the South American and African plates (in the south) are gradually separating.
Earthquakes in this region are relatively common and expected—they reflect the ongoing geological process that shapes our ocean basins. A magnitude 5.0 event is considered moderate and is typically felt in the immediate area but causes minimal to no structural damage.
What People Might Notice
The primary concern with underwater earthquakes is the potential for tsunamis. However, most Mid-Atlantic Ridge earthquakes do not generate significant wave activity because the movement is primarily horizontal (side-to-side) rather than vertical. That said, coastal areas on both sides of the Atlantic—particularly in countries like Portugal, Iceland, Morocco, and West Africa—should remain alert to official tsunami warnings from their national monitoring agencies over the next few hours.
If you live in a coastal Atlantic community, monitor local emergency management channels and NOAA alerts for any official guidance.
Smart Preparedness Steps
1. Know your evacuation routes: If you’re in a coastal area, familiarize yourself with high-ground routes and community evacuation plans—useful for any ocean-related hazard.
2. Sign up for alerts: Enable emergency notifications from your local authorities and NOAA Weather Radio so you receive real-time warnings if needed.
3. Keep supplies accessible: Maintain a basic emergency kit with water, first aid, and a battery-powered radio—standard preparedness for any region prone to natural events.
For live updates on seismic activity and space weather events affecting Earth, visit NOAA’s real-time data dashboard at https://survivalsiren.com/spaceweather/feed.html.
Source: USGS
