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M5.0 Earthquake near Rat Islands, Aleutian Islands, Alaska

UTC time: 2026-09-27 07:48:12 UTC Local time: —
Earthquake newsQuakeMap24
First published: Content updated:

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

Magnitude
M5.0
Depth
34.1 km
Source
USGS

Rat Islands, Aleutian Islands, Alaska

Map

M5.0 Earthquake near Rat Islands, Aleutian Islands, Alaska · 2026-09-27 — Map showing the location of the epicenter
M5.0 Earthquake near Rat Islands, Aleutian Islands, Alaska · 2026-09-27 — Map showing the location of the epicenter

About this earthquake

On September 27, 2026 at 07:48 UTC, a magnitude M5.0 earthquake occurred near Rat Islands, Aleutian Islands, Alaska. 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

ID
0d5ffab4e8c847b4155167b868c50e52b8bb8c3d
Magnitude
M5.0
Depth
34.1 km
UTC time
2026-09-27 07:48:12 UTC
Local time
—
Country
—
Source
usgs
Coordinates
50.90800, 179.33500
Temperature
8.1°C

Depth profile

Depth profile Depth: 34.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 34.1 km
Shallow
34.1 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

Ground shaking

III
Weak · Intensity (MMI) III
Felt by a few, no damage.

Tectonic context

Located on the North America Plate.
Near the boundary North America ↔ Pacific · about 41 km away

Volcanoes nearby

  • Semisopochnoi
    Distance: 115 km ·Stratovolcano ·Elevation: 1'221 m ·Last eruption: 2023 ·United States
  • Little Sitkin
    Distance: 128 km ·Stratovolcano ·Elevation: 1'174 m ·Last eruption: 1830 ·United States
  • Davidof
    Distance: 137 km ·Stratovolcano ·Elevation: 328 m ·United States
  • Segula
    Distance: 148 km ·Stratovolcano ·Elevation: 1'160 m ·United States
  • Kiska
    Distance: 179 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States
  • Buldir
    Distance: 286 km ·Stratovolcano ·Elevation: 656 m ·United States

Comparison of seismic sources

2 sources currently report magnitudes from M4.6 to M5.0.

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

SourceMagnitudeDepthPosition difference
EMSCM4.646.5 km1.0 km
USGSM5.034.1 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 150 km.

Magnitude rank#46
Earlier events M≥4105
Earlier events M≥556
Compared since2025-01-30

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

Strongest earlier events

M6.12026-05-09 04:42:22 UTC11.7 kmRat Islands, Aleutian Islands, Alaska M6.12026-03-04 17:54:35 UTC113.3 km M6.12025-08-28 11:07:35 UTC146.4 kmRat Islands, Aleutian Islands M5.92026-05-09 04:42:25 UTC56.2 kmRat Islands, Aleutian Islands, United States [Sea: United States] M5.92026-05-09 04:42:22 UTC19.4 km292 km WSW of Adak, Alaska

Stats (last 24h)

Global (24h)
503
Country (24h)
—
—
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