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M6.4 Earthquake near South Sandwich Islands region

UTC time: 2026-07-11 10:26:45 UTC Local time: —
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded

Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.

Magnitude
M6.4
Depth
46.0 km
Source
USGS

South Sandwich Islands region

Map

M6.4 Earthquake near South Sandwich Islands region · 2026-07-11 — Map showing the location of the epicenter
M6.4 Earthquake near South Sandwich Islands region · 2026-07-11 — Map showing the location of the epicenter

About this earthquake

On July 11, 2026 at 10:26 UTC, a magnitude M6.4 earthquake occurred near South Sandwich Islands region. With a focal depth of about 46 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude can cause significant damage in populated areas.

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

Details

ID
c4fa7a6a08d1d33802d7388ad974f96c0d6eb2da
Magnitude
M6.4
Depth
46.0 km
UTC time
2026-07-11 10:26:45 UTC
Local time
—
Country
—
Source
usgs
Coordinates
-55.53610, -28.97040
Temperature
-0.9°C

Depth profile

Depth profile Depth: 46 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 46 km
Shallow
46 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

Estimated impact

Green No or minimal impact expected.

Ground shaking

IV
Light · Intensity (MMI) IV
Felt by many, no damage.

Tectonic context

Located on the Sandwich Plate.
Near the boundary Sandwich ↔ Scotia · about 51 km away

Nearby population centers

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

PlaceDistanceDirectionPopulation
Grytviken501.4 kmW2

GeoNames · CC BY 4.0

Volcanoes nearby

  • Protector Seamounts
    Distance: 65 km ·Volcanic field ·Elevation: -55 m ·Last eruption: 1962 ·United Kingdom
  • Zavodovski
    Distance: 122 km ·Stratovolcano ·Elevation: 551 m ·Last eruption: 2016 ·United Kingdom
  • Leskov Island
    Distance: 135 km ·Stratovolcano ·Elevation: 190 m ·United Kingdom
  • Hodson
    Distance: 172 km ·Stratovolcano ·Elevation: 835 m ·United Kingdom
  • Candlemas Island
    Distance: 223 km ·Stratovolcano ·Elevation: 550 m ·Last eruption: 1911 ·United Kingdom
  • Saunders
    Distance: 294 km ·Stratovolcano ·Elevation: 843 m ·Last eruption: 2026 ·United Kingdom

Comparison of seismic sources

5 sources currently report magnitudes from M6.1 to M6.6.

Measurements can differ because agencies use different networks and calculation methods. Values may be revised.

SourceMagnitudeDepthPosition difference
GFZM6.610.0 km7.0 km
RESIFM6.110.0 km9.0 km
INGVM6.414.8 km18.5 km
EMSCM6.446.0 km0.0 km
USGSM6.446.0 km0.0 km

No unambiguous area assignment

Context for this earthquake

This event has no unambiguous country assignment in the analysed catalogue. It is therefore not assigned to a regional profile.

Earthquake overview

Historical context nearby

Comparison with recorded earthquakes before this event within 250 km.

Magnitude rank#1
Earlier events M≥4181
Earlier events M≥5107
Compared since2025-01-01

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

Strongest earlier events

M6.22025-01-01 13:48:25 UTC173.5 kmSouth Sandwich Islands Region M6.12025-01-01 13:48:24 UTC171.1 kmSouth Sandwich Islands region M6.02025-03-14 23:42:31 UTC133.4 kmSouth Sandwich Islands Region M6.02026-05-20 23:00:49 UTC134.2 kmSouth Sandwich Islands M5.82026-05-20 23:01:00 UTC89.3 kmSouth Sandwich Islands Region

Stats (last 24h)

Global (24h)
614
Country (24h)
—
—
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