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M5.0 Earthquake near 91 km SE of Atka, Alaska

UTC time: 2026-07-25 21:03:18 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. How our reports are produced ↗

Magnitude
M5.0
Depth
40.8 km
Source
USGS

91 km SE of Atka, Alaska

Map

M5.0 Earthquake near 91 km SE of Atka, Alaska · 2026-07-25 — Map showing the location of the epicenter
M5.0 Earthquake near 91 km SE of Atka, Alaska · 2026-07-25 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.0 earthquake was recorded near 91 km SE of Atka, Alaska on July 25, 2026 at 21:03 UTC. With a focal depth of about 41 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size can cause damage near the epicenter.

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

Details

ID
e9d92f3b4df6614a2bb0ece20a093f1c690bc499
Magnitude
M5.0
Depth
40.8 km
UTC time
2026-07-25 21:03:18 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.60630, -173.28030
Temperature
10.7°C

Depth profile

Depth profile Depth: 40.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 40.8 km
Shallow
40.8 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

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 52 km away

Volcanoes nearby

  • Seguam
    Distance: 95 km ·Stratovolcano(es) ·Elevation: 1'054 m ·Last eruption: 1993 ·United States
  • Atka Volcanic Complex
    Distance: 100 km ·Stratovolcano(es) ·Elevation: 1'518 m ·Last eruption: 2025 ·United States
  • Koniuji
    Distance: 144 km ·Stratovolcano ·Elevation: 273 m ·Last eruption: -1150 ·United States
  • Kasatochi
    Distance: 166 km ·Stratovolcano ·Elevation: 314 m ·Last eruption: 2008 ·United States
  • Amukta
    Distance: 171 km ·Stratovolcano ·Elevation: 1'066 m ·Last eruption: 1996 ·United States
  • Chagulak
    Distance: 181 km ·Stratovolcano ·Elevation: 1'028 m ·United States

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Atka AirportUnited States · AKB · PAAK
    93.2 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-06

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Subsequent earthquakes nearby

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

First 6 hours2
First 24 hours7
First 72 hours8
Strongest subsequent eventM5.8
M4.02026-07-25 23:31:43 UTC54.8 kmANDREANOF ISLANDS, ALEUTIAN IS. M4.12026-07-26 01:57:11 UTC16.3 km80 km SE of Atka, Alaska M5.82026-07-26 08:35:19 UTC12.0 km99 km SE of Atka, Alaska M5.82026-07-26 08:35:26 UTC49.7 kmUnorganized Borough M4.72026-07-26 13:18:43 UTC20.1 kmAndreanof Islands, Aleutian Islands M3.72026-07-26 16:06:59 UTC9.7 kmANDREANOF ISLANDS, ALEUTIAN IS. M3.92026-07-26 17:16:12 UTC131.7 kmANDREANOF ISLANDS, ALEUTIAN IS. M3.92026-07-27 10:12:07 UTC42.2 km128 km SSE of Atka, Alaska M3.82026-07-31 08:02:07 UTC23.3 km102 km SSE of Atka, Alaska M0.52026-07-31 18:07:50 UTC103.8 kmUnorganized Borough M4.92026-08-01 23:07:00 UTC13.1 kmAndreanof Islands, Aleutian Islands M4.82026-08-02 05:18:36 UTC14.5 kmAndreanof Islands, Aleutian Islands

Comparison of seismic sources

4 sources currently report magnitudes from M4.8 to M5.0.

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

SourceMagnitudeDepthPosition difference
GFZM5.010.0 km4.3 km
USGSM5.05.0 km18.2 km
SERBIA_RSZM4.810.0 km25.2 km
EMSCM5.029.7 km11.5 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#14
Earlier events M≥462
Earlier events M≥519
Compared since2025-01-13

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

Strongest earlier events

M6.22025-09-03 20:57:41 UTC82.2 km87 km SW of Nikolski, Alaska M5.62026-05-22 12:16:14 UTC147.0 km###.# km ( ###.# mi) NW (az= 304.0) from Port Orford, OR M5.62026-05-22 12:16:13 UTC137.9 kmFox Islands, Aleutian Islands M5.62026-05-22 12:16:13 UTC145.7 kmFOX ISLANDS, ALEUTIAN ISLANDS M5.42025-11-09 09:36:48 UTC146.8 km208 km SW of Nikolski, Alaska

Stats (last 24h)

Global (24h)
498
Country (24h)
—
—
Current earthquakes in
Magnitude Place Local time
No recent events available.

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