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M5.6 Earthquake near 87 km SSE of Adak, Alaska

UTC time: 2025-03-22 09:49:21 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.

Magnitude
M5.6
Depth
20.5 km
Source
USGS

87 km SSE of Adak, Alaska

Map

M5.6 Earthquake near 87 km SSE of Adak, Alaska · 2025-03-22 — Map showing the location of the epicenter
M5.6 Earthquake near 87 km SSE of Adak, Alaska · 2025-03-22 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.6 earthquake was recorded near 87 km SSE of Adak, Alaska on March 22, 2025 at 09:49 UTC. The hypocenter lay relatively close to the surface at around 20 km, increasing how strongly it was felt. Events of this size can cause damage near the epicenter.

The event was recorded by USGS.

Details

ID
da28aaec7b0b54cf7e6ecde42c688e2acd36be7d
Magnitude
M5.6
Depth
20.5 km
UTC time
2025-03-22 09:49:21 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.15990, -176.11390

Depth profile

Depth profile Depth: 20.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 20.5 km
Shallow
20.5 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

  • Moffett
    Distance: 98 km ·Stratovolcano ·Elevation: 1'196 m ·Last eruption: -1600 ·United States
  • Great Sitkin WATCH · ORANGE
    Distance: 102 km ·Stratovolcano ·Elevation: 1'740 m ·Last eruption: 2026 ·United States
  • Kanaga
    Distance: 112 km ·Stratovolcano ·Elevation: 1'307 m ·Last eruption: 2023 ·United States
  • Kasatochi
    Distance: 121 km ·Stratovolcano ·Elevation: 314 m ·Last eruption: 2008 ·United States
  • Bobrof
    Distance: 124 km ·Stratovolcano ·Elevation: 738 m ·United States
  • Koniuji
    Distance: 136 km ·Stratovolcano ·Elevation: 273 m ·Last eruption: -1150 ·United States

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Adak AirportUnited States · ADK · PADK
    88.4 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-04

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 hours20
First 24 hours60
First 72 hours90
Strongest subsequent eventM5.4
M5.42025-03-22 09:49:22 UTC0.7 km74 km SSE of Adak, Alaska M2.62025-03-22 10:03:01 UTC23.7 km63 km SSE of Adak, Alaska M2.02025-03-22 10:27:52 UTC23.3 km68 km SE of Adak, Alaska M2.12025-03-22 10:51:07 UTC8.8 km79 km SSE of Adak, Alaska M2.22025-03-22 10:57:41 UTC14.1 km78 km SSE of Adak, Alaska M2.22025-03-22 11:27:44 UTC9.0 km93 km SSE of Adak, Alaska M2.02025-03-22 11:32:46 UTC13.5 km73 km SSE of Adak, Alaska M2.12025-03-22 11:39:37 UTC11.8 km76 km SSE of Adak, Alaska M3.42025-03-22 12:24:43 UTC21.7 km107 km SSE of Adak, Alaska M4.92025-03-22 12:59:19 UTC6.4 km86 km SSE of Adak, Alaska M5.02025-03-22 12:59:20 UTC12.9 km M2.72025-03-22 13:10:03 UTC18.3 km104 km SSE of Adak, Alaska

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#3
Earlier events M≥428
Earlier events M≥59
Compared since2025-01-02

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

Strongest earlier events

M6.22025-03-21 14:53:41 UTC3.1 km88 km SSE of Adak, Alaska M6.22025-03-21 14:53:43 UTC20.9 kmAndreanof Islands, Aleutian Islands M5.62025-03-20 04:28:54 UTC12.6 km M5.62025-03-20 04:28:52 UTC0.4 km87 km SSE of Adak, Alaska M5.52025-03-21 14:58:27 UTC0.5 km93 km SSE of Adak, Alaska

Stats (last 24h)

Global (24h)
518
Country (24h)
—
—
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