M4.9 earthquake 289 km SSE of Georgetown, Saint Helena
A magnitude 4.9 earthquake struck 289 km SSE of Georgetown, Saint Helena on Thu, Aug 22, 1985, 1:42 PM GMT-1 (14:42 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
- 4.9 (ms), light
- Local time
- UTC
- 1985-08-22 14:42:29 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 10.290° S, 13.268° 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 1.9 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 usp0002j0r. Read Tue, Sep 29, 2026, 10:39 AM UTC.