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M5.7 Depth: 10.0 km

M5.7 Earthquake near Alaska (United States)

UTC time: 2026-02-23 05:11:50 UTC Local time: —

About this earthquake

A magnitude M5.7 earthquake was recorded near Alaska (United States) on February 23, 2026 at 05:11 UTC. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Events of this size can cause damage near the epicenter.

The event was recorded by RESIF. United States: 186 earthquakes were recorded in the past 24 hours, the strongest reaching M5.8.

Details

Magnitude
M5.7
Depth
10.0 km
UTC time
2026-02-23 05:11:50 UTC
Local time
—
Country
United States
State
Alaska
City
Alaska
Source
resif
Coordinates
52.70182, -169.95338
Temperature
5.2°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
10 km — shallower than the regional average (15.8 km)
Regional average: 15.8 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

Volcanoes nearby

  • Herbert
    Distance: 12 km ·Stratovolcano ·Elevation: 1'280 m ·United States
  • Cleveland
    Distance: 14 km ·Stratovolcano ·Elevation: 1'730 m ·Last eruption: 2020 ·United States
  • Tana
    Distance: 19 km ·Stratovolcano(es) ·Elevation: 1'170 m ·United States
  • Carlisle
    Distance: 22 km ·Stratovolcano ·Elevation: 1'620 m ·Last eruption: 1828 ·United States
  • Kagamil
    Distance: 34 km ·Stratovolcano ·Elevation: 893 m ·Last eruption: 1929 ·United States
  • Uliaga
    Distance: 42 km ·Stratovolcano ·Elevation: 888 m ·United States

Subsequent earthquakes nearby

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

First 6 hours6
First 24 hours8
First 72 hours14
Strongest subsequent eventM5.9
M3.42026-02-23 05:24:14 UTC25.0 kmFOX ISLANDS, ALEUTIAN ISLANDS M4.22026-02-23 09:42:33 UTC38.1 kmFOX ISLANDS, ALEUTIAN ISLANDS M5.92026-02-23 10:02:06 UTC21.8 km88 km WSW of Nikolski, Alaska M5.42026-02-23 10:02:07 UTC32.7 km92 km SW of Nikolski, Alaska M5.92026-02-23 10:02:08 UTC22.7 kmFox Islands M4.42026-02-23 10:54:31 UTC67.5 kmFox Islands M4.22026-02-23 21:11:06 UTC30.4 km88 km SW of Nikolski, Alaska M4.22026-02-23 21:11:08 UTC25.6 kmFOX ISLANDS, ALEUTIAN ISLANDS M4.42026-02-24 10:22:07 UTC15.4 kmAlaska M2.82026-02-24 18:00:48 UTC22.4 kmFOX ISLANDS, ALEUTIAN ISLANDS M2.82026-02-24 18:00:48 UTC25.8 kmFox Islands M2.82026-02-24 18:07:55 UTC49.4 km107 km SW of Nikolski, Alaska

Comparison of seismic sources

3 sources currently report magnitudes from M5.7 to M6.3.

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

SourceMagnitudeDepthPosition difference
NNSNM6.314.0 km38.9 km
USPM6.010.0 km20.6 km
RESIFM5.710.0 km0.0 km

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#9
Earlier events M≥473
Earlier events M≥538
Compared since2025-01-13

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

Strongest earlier events

M6.12026-02-23 05:11:48 UTC38.9 km###.# km ( ###.# mi) WNW (az= 303.7) from Port Orford, OR M6.12026-02-23 05:11:48 UTC14.9 kmAlaska M6.02025-09-03 20:57:47 UTC45.0 km87 km SW of Nikolski, Alaska M5.92025-09-03 20:57:50 UTC61.9 kmFox Islands, Aleutian Islands, United States [Sea: United States] M5.82025-09-03 20:57:51 UTC54.2 kmFox Islands, Aleutian Islands

Historic earthquake map · United States

Open history map
Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · United States

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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