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M5.4 Depth: 10.0 km

M5.4 Earthquake near South Sandwich Islands Region

UTC time: 2025-09-20 15:31:09 UTC Local time: —

About this earthquake

On September 20, 2025 at 15:31 UTC, a magnitude M5.4 earthquake occurred near South Sandwich Islands Region. With a focal depth of about 10 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size can cause damage near the epicenter.

The event was recorded by GFZ.

Details

Magnitude
M5.4
Depth
10.0 km
UTC time
2025-09-20 15:31:09 UTC
Local time
—
Country
—
Source
gfz
Coordinates
-57.98000, -24.46000
Temperature
-9.1°C

Map

Depth profile

Depth profile Depth: 10 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 10 km
Shallow
10 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
Grytviken850.8 kmNW2

GeoNames · CC BY 4.0

Volcanoes nearby

  • Saunders
    Distance: 121 km ·Stratovolcano ·Elevation: 843 m ·Last eruption: 2026 ·United Kingdom
  • Montagu Island
    Distance: 123 km ·Shield ·Elevation: 1'370 m ·Last eruption: 2007 ·United Kingdom
  • Candlemas Island
    Distance: 166 km ·Stratovolcano ·Elevation: 550 m ·Last eruption: 1911 ·United Kingdom
  • Bristol Island
    Distance: 167 km ·Stratovolcano ·Elevation: 1'100 m ·Last eruption: 2016 ·United Kingdom
  • Hodson
    Distance: 215 km ·Stratovolcano ·Elevation: 835 m ·United Kingdom
  • Southern Thule
    Distance: 228 km ·Stratovolcano(es) ·Elevation: 1'075 m ·Last eruption: 1975 ·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 hours2
Strongest subsequent eventM5.5
M5.12025-09-23 05:36:34 UTC102.9 kmSouth Sandwich Islands region M5.12025-09-23 05:36:34 UTC98.2 km M5.22025-09-24 13:36:21 UTC83.0 kmEvent of magnitude 5.2, near of Mar del Plata (Monde) M5.32025-09-24 13:36:28 UTC56.8 kmSouth Sandwich Islands Region M5.12025-09-24 13:36:30 UTC61.1 km M5.12025-09-24 13:36:31 UTC61.4 kmSouth Sandwich Islands region M5.42025-10-08 03:50:46 UTC24.9 km M5.52025-10-08 03:50:47 UTC31.2 kmSouth Sandwich Islands Region M5.12025-10-08 03:51:00 UTC44.4 kmEvent of magnitude 5.1, near of Mar del Plata (Monde) M4.92025-10-13 02:40:34 UTC125.4 km

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#10
Earlier events M≥445
Earlier events M≥523
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 UTC82.1 km M5.62025-08-31 16:24:21 UTC63.9 kmSouth Sandwich Islands Region M5.62025-07-30 09:24:37 UTC147.0 kmSouth Sandwich Islands region M5.62025-07-30 09:24:37 UTC147.0 km M5.62025-04-05 11:32:09 UTC102.9 kmSouth Sandwich Islands region

Stats (last 24h)

Global (24h)
658
Country (24h)
—
—
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