M4.9 Depth: 152.7 km

M4.9 Earthquake near South Sandwich Islands Region (South Georgia & South Sandwich Islands)

UTC time: 2025-12-12 13:56:10 UTC Local time: —

About this earthquake

A magnitude M4.9 earthquake was recorded near South Sandwich Islands Region (South Georgia & South Sandwich Islands) on December 12, 2025 at 13:56 UTC. At around 153 km, the focal depth places this among intermediate-depth events. Tremors of this size are distinctly felt and can occasionally cause light damage.

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

Details

Magnitude

M4.9

Depth

152.7 km

UTC time

2025-12-12 13:56:10 UTC

Local time

—

Country

South Georgia & South Sandwich Islands

City

South Sandwich Islands

Source

usp

Coordinates

-58.96404, -26.57700

Temperature

-1.5°C

Map

Depth profile

Intermediate

152.7 km

152.7 km — deeper than the regional average (86.5 km)

Regional average: 86.5 km

Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Volcanoes nearby

Bristol Island

Distance: 6 km ·Stratovolcano ·Elevation: 1'100 m ·Last eruption: 2016 ·United Kingdom
Montagu Island

Distance: 59 km ·Shield ·Elevation: 1'370 m ·Last eruption: 2007 ·United Kingdom
Southern Thule

Distance: 65 km ·Stratovolcano(es) ·Elevation: 1'075 m ·Last eruption: 1975 ·United Kingdom
Saunders

Distance: 130 km ·Stratovolcano ·Elevation: 843 m ·Last eruption: 2026 ·United Kingdom
Candlemas Island

Distance: 210 km ·Stratovolcano ·Elevation: 550 m ·Last eruption: 1911 ·United Kingdom
Hodson

Distance: 253 km ·Stratovolcano ·Elevation: 835 m ·United Kingdom

Historic earthquake map · South Georgia & South Sandwich Islands

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