M4.5 earthquake 278 km ENE of Georgetown, Saint Helena
A magnitude 4.5 earthquake struck 278 km ENE of Georgetown, Saint Helena on Tue, Aug 11, 1981, 6:54 PM GMT-1 (19:54 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
- 4.5 (mb), light
- Local time
- UTC
- 1981-08-11 19:54:20 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 6.748° S, 12.186° W
- Region
- Saint Helena
- 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 1.5 and up: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todaySaint Helena earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001f7q. Read Tue, Sep 22, 2026, 5:36 AM UTC.