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M5.0 Depth: 37.1 km

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

UTC time: 2025-07-21 19:07:19 UTC Local time: —

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: 156 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Details

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

Map

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 (15.9 km)
Regional average: 15.9 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 km 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 km M5.32025-07-26 23:09:38 UTC118.8 km 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 km

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#2
Earlier events M≥49
Earlier events M≥51
Compared since2025-01-30

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

Strongest earlier events

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 M4.42025-01-30 04:53:11 UTC119.7 kmRat Islands, Aleutian Islands, Alaska M4.32025-07-03 04:46:23 UTC70.8 km204 km WSW of Adak, Alaska

Historic earthquake map · United States

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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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