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M5.1 Depth: 34.3 km

M5.1 Earthquake near South Sandwich Islands region

UTC time: 2025-09-23 05:36:34 UTC Local time: —

About this earthquake

On September 23, 2025 at 05:36 UTC, a magnitude M5.1 earthquake occurred near South Sandwich Islands region. With a focal depth of about 34 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude can damage poorly built structures.

The data is provided by USGS and cross-checked across seismological networks.

Details

Magnitude
M5.1
Depth
34.3 km
UTC time
2025-09-23 05:36:34 UTC
Local time
—
Country
—
Source
usgs
Coordinates
-58.79180, -25.30720
Temperature
-4.6°C

Map

Depth profile

Depth profile Depth: 34.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 34.3 km
Shallow
34.3 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation
Grytviken848.7 kmNW2

GeoNames · CC BY 4.0

Volcanoes nearby

  • Montagu Island
    Distance: 73 km ·Shield ·Elevation: 1'370 m ·Last eruption: 2007 ·United Kingdom
  • Bristol Island
    Distance: 75 km ·Stratovolcano ·Elevation: 1'100 m ·Last eruption: 2016 ·United Kingdom
  • Saunders
    Distance: 130 km ·Stratovolcano ·Elevation: 843 m ·Last eruption: 2026 ·United Kingdom
  • Southern Thule
    Distance: 131 km ·Stratovolcano(es) ·Elevation: 1'075 m ·Last eruption: 1975 ·United Kingdom
  • Candlemas Island
    Distance: 207 km ·Stratovolcano ·Elevation: 550 m ·Last eruption: 1911 ·United Kingdom
  • Hodson
    Distance: 256 km ·Stratovolcano ·Elevation: 835 m ·United Kingdom

Subsequent earthquakes nearby

Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.

First 6 hours0
First 24 hours0
First 72 hours3
Strongest subsequent eventM5.5
M5.32025-09-24 13:36:28 UTC94.9 kmSouth Sandwich Islands Region M5.12025-09-24 13:36:30 UTC85.1 km M5.12025-09-24 13:36:31 UTC85.6 kmSouth Sandwich Islands region M5.42025-10-08 03:50:46 UTC126.8 km M5.52025-10-08 03:50:47 UTC132.0 kmSouth Sandwich Islands Region M5.12025-10-08 03:51:00 UTC128.3 kmEvent of magnitude 5.1, near of Mar del Plata (Monde) M4.92025-10-13 02:40:34 UTC22.9 km M5.22025-10-21 18:11:00 UTC20.9 kmSouth Sandwich Islands Region M5.22025-10-21 18:11:08 UTC30.6 kmSouth Sandwich Islands region

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#20
Earlier events M≥449
Earlier events M≥528
Compared since2025-01-03

The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.

Strongest earlier events

M5.92025-08-31 16:24:29 UTC45.1 km M5.62025-08-31 16:24:21 UTC58.3 kmSouth Sandwich Islands Region M5.62025-07-30 09:24:37 UTC54.0 kmSouth Sandwich Islands region M5.62025-07-30 09:24:37 UTC52.0 km M5.52025-08-31 16:24:23 UTC26.7 kmEvent of magnitude 5.5, near of Mar del Plata (Monde)

Stats (last 24h)

Global (24h)
654
Country (24h)
—
—
Current earthquakes in
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No recent events available.

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