M5.1 Depth: 10.0 km

M5.1 Earthquake near UNIMAK ISLAND REGION, ALASKA

UTC time: 2025-05-31 22:41:03 UTC Local time: —

About this earthquake

On May 31, 2025 at 22:41 UTC, a magnitude M5.1 earthquake occurred near UNIMAK ISLAND REGION, ALASKA. With a focal depth of about 10 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 event was recorded by EMSC.

Details

Magnitude

M5.1

Depth

10.0 km

UTC time

2025-05-31 22:41:03 UTC

Local time

—

Country

—

Source

emsc

Coordinates

53.55000, -163.17000

Temperature

7.8°C

Map

Depth profile

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

Anchorage1161.8 kmNE289'600

GeoNames · CC BY 4.0

Volcanoes nearby

Roundtop

Distance: 142 km ·Stratovolcano ·Elevation: 1'871 m ·Last eruption: -7600 ·United States
Shishaldin ADVISORY · YELLOW

Distance: 144 km ·Stratovolcano ·Elevation: 2'857 m ·Last eruption: 2023 ·United States
Westdahl

Distance: 144 km ·Stratovolcano? ·Elevation: 1'563 m ·Last eruption: 1992 ·United States
Fisher

Distance: 147 km ·Stratovolcano ·Elevation: 1'112 m ·Last eruption: 1830 ·United States
Frosty

Distance: 170 km ·Stratovolcano(es) ·Elevation: 1'728 m ·United States
Dutton

Distance: 191 km ·Stratovolcano ·Elevation: 1'465 m ·United States

Subsequent earthquakes nearby

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

First 6 hours0

First 24 hours1

First 72 hours1

Strongest subsequent eventM4.4

M4.42025-06-01 15:50:42 UTC94.9 kmSOUTH OF ALASKA M3.62025-06-10 09:29:36 UTC22.3 kmUNIMAK ISLAND REGION, ALASKA M4.12025-06-18 20:50:17 UTC143.2 kmFOX ISLANDS, ALEUTIAN ISLANDS M3.22025-06-28 01:18:33 UTC126.0 kmUNIMAK ISLAND REGION, ALASKA

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#3

Earlier events M≥416

Earlier events M≥55

Compared since2025-01-02

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

Strongest earlier events

M5.32025-05-23 02:30:40 UTC91.9 km M5.22025-05-23 02:30:40 UTC91.8 kmUNIMAK ISLAND REGION, ALASKA M5.12025-05-23 02:30:42 UTC93.4 kmUnimak Island Region, Alaska M5.02025-05-19 15:06:32 UTC131.3 kmAlaska Peninsula M5.02025-02-04 19:27:46 UTC57.1 km151 km SE of Akutan, Alaska

Stats (last 24h)

Global (24h)

494

Country (24h)

—

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