M7.1 earthquake central Mid-Atlantic Ridge
A magnitude 7.1 earthquake struck in the central Mid-Atlantic Ridge on Thu, Nov 1, 1984, 1:48 AM GMT-3 (04:48 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 7.1 (mw), major
- Local time
- UTC
- 1984-11-01 04:48:50 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 8.185° N, 38.794° 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.
- Depth from
- OPERATOR_ASSIGNED
Nearby
Within 100 km, magnitude 2.5 and up: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00028pr (also filed as gcmtc110184a, gcmt19841101044849, iscgem538115). Read Tue, Sep 22, 2026, 11:13 AM UTC.