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M5.0 Earthquake near 274 km WSW of Adak, Alaska (United States)

UTC time: 2025-07-21 19:07:19 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.

Map

M5.0 Earthquake near 274 km WSW of Adak, Alaska (United States) · 2025-07-21 — Map showing the location of the epicenter
M5.0 Earthquake near 274 km WSW of Adak, Alaska (United States) · 2025-07-21 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.0 earthquake was recorded near 274 km WSW of Adak, Alaska (United States) on July 21, 2025 at 19:07 UTC. With a focal depth of about 37 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 USGS. United States: 185 earthquakes were recorded in the past 24 hours, the strongest reaching M3.0.

Details

ID
44b0374ff46f3a2d2597f5d0788adc7ab975dd40
Magnitude
M5.0
Depth
37.1 km
UTC time
2025-07-21 19:07:19 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
51.24440, 179.53610
Temperature
9.3°C

Depth profile

Depth profile Depth: 37.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 37.1 km
Shallow
37.1 km
37.1 km — deeper than the regional average (15.2 km)
Regional average: 15.2 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

  • Semisopochnoi
    Distance: 76 km ·Stratovolcano ·Elevation: 1'221 m ·Last eruption: 2023 ·United States
  • Little Sitkin
    Distance: 104 km ·Stratovolcano ·Elevation: 1'174 m ·Last eruption: 1830 ·United States
  • Davidof
    Distance: 116 km ·Stratovolcano ·Elevation: 328 m ·United States
  • Segula
    Distance: 129 km ·Stratovolcano ·Elevation: 1'160 m ·United States
  • Kiska
    Distance: 164 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States
  • Buldir
    Distance: 278 km ·Stratovolcano ·Elevation: 656 m ·United States

Subsequent earthquakes nearby

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

First 6 hours2
First 24 hours2
First 72 hours2
Strongest subsequent eventM5.4
M5.02025-07-21 19:07:20 UTC9.6 kmRAT ISLANDS, ALEUTIAN ISLANDS M4.82025-07-21 19:07:23 UTC30.1 kmRat Islands, Aleutian Islands M5.22025-07-26 05:03:52 UTC86.0 kmRat Islands, Aleutian Islands, Alaska M5.42025-07-26 05:03:53 UTC93.4 kmRat Islands, Aleutian Islands, Alaska M5.32025-07-26 05:03:53 UTC96.0 kmRat Islands, Aleutian Islands M5.42025-07-26 05:03:54 UTC91.6 kmRAT ISLANDS, ALEUTIAN ISLANDS M5.32025-07-26 23:09:38 UTC118.8 kmRAT ISLANDS, ALEUTIAN ISLANDS M5.22025-07-26 23:09:39 UTC101.8 kmRat Islands, Aleutian Islands, Alaska M5.32025-07-26 23:09:39 UTC125.8 kmRat Islands, Aleutian Islands, Alaska M5.12025-07-26 23:09:40 UTC132.8 kmRat Islands, Aleutian Islands M0.42025-07-30 18:59:48 UTC133.2 km146 km W of Adak, Alaska M4.72025-08-18 06:10:39 UTC115.0 kmANDREANOF ISLANDS, ALEUTIAN IS.

Alaska

Context for this earthquake

21 Sep 2025 – 21 Sep 2026 · M ≥ 3.0 · 653 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#4
Earlier events M≥411
Earlier events M≥53
Compared since2025-01-30

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

Strongest earlier events

M5.82025-06-29 07:13:46 UTC148.1 km M5.32025-04-16 03:49:48 UTC144.1 km M5.22025-04-16 03:49:49 UTC144.1 km146 km SW of Adak, Alaska M4.92025-02-21 07:07:09 UTC102.0 kmRat Islands, Aleutian Islands, Alaska M4.42025-03-16 22:46:22 UTC107.7 kmRat Islands, Aleutian Islands, Alaska

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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