Earthquakes in Saint Helena — November 2025
1 earthquakes were recorded in Saint Helena during November 2025, an average of 0.0 per day.
1 reached magnitude 4 or above and 0 reached magnitude 5 or above. The average focal depth was 10 km.
The month's largest event in Saint Helena was a magnitude 4.9 earthquake near Georgetown, Saint Helena on 29 November 2025 at 04:20 UTC. A magnitude 4.9 earthquake radiates roughly 338 tons of TNT equivalent in seismic energy.
That is close to the Saint Helena monthly average of 1 events over the period we cover.
100% of events here are shallow (under 70 km), 0% intermediate (70–300 km) and 0% deep-focus (over 300 km). Almost everything here is crustal. That is characteristic of transform faulting or continental deformation rather than subduction — and it means shaking at the surface is strong for the magnitudes involved.
By band, the catalogue holds 1 in the magnitude 4 range.
That is 17% below the 1 events Saint Helena averages per month across the 5 months on record.
Largest earthquakes in Saint Helena, November 2025
1 event listed below, newest first. Times are UTC. Click any column header to re-sort.
| Time (UTC) | Mag | Location | Depth (km) | Country | Details |
|---|---|---|---|---|---|
| 4.9 | Georgetown, Saint Helena | 10.0 | Saint Helena | View details View |
Frequently asked questions
How many earthquakes hit Saint Helena in November 2025?
1 earthquakes were recorded in Saint Helena during November 2025, of which 1 were magnitude 4 or above.
What was the biggest earthquake in Saint Helena in November 2025?
A magnitude 4.9 event near Georgetown, Saint Helena on 29 November 2025.
Other months in Saint Helena
Magnitudes for November 2025 reflect the current USGS review status and may have been revised since first publication. See our guides on the magnitude scale, focal depth and why earthquakes cluster.