M6.4 earthquake central Mid-Atlantic Ridge
A magnitude 6.4 earthquake struck in the central Mid-Atlantic Ridge on Thu, Sep 25, 1958, 4:20 AM GMT-3 (07:20 UTC), 15 km (9 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.4 (mw), strong
- Local time
- UTC
- 1958-09-25 07:20:05 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 8.027° N, 39.300° W
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.5 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem885177. Read Tue, Sep 22, 2026, 9:42 PM UTC.