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M5.2 Earthquake near 87 km SSE of Adak, Alaska

UTC time: 2025-03-20 06:07:08 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
M5.2
Depth
20.0 km
Source
USGS

87 km SSE of Adak, Alaska

Map

M5.2 Earthquake near 87 km SSE of Adak, Alaska · 2025-03-20 — Map showing the location of the epicenter
M5.2 Earthquake near 87 km SSE of Adak, Alaska · 2025-03-20 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.2 earthquake was recorded near 87 km SSE of Adak, Alaska on March 20, 2025 at 06:07 UTC. The hypocenter lay relatively close to the surface at around 20 km, increasing how strongly it was felt. Earthquakes of this magnitude can damage poorly built structures.

The event was recorded by USGS.

Details

ID
5afc0a3aac7ca6cd18220bb5242b0499bdf8026b
Magnitude
M5.2
Depth
20.0 km
UTC time
2025-03-20 06:07:08 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.15290, -176.12110

Depth profile

Depth profile Depth: 20 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 20 km
Shallow
20 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: 103 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: 137 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
    88.9 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-21

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 hours26
First 24 hours77
First 72 hours203
Strongest subsequent eventM6.2
M2.62025-03-20 06:25:50 UTC5.7 km93 km SSE of Adak, Alaska M3.02025-03-20 06:35:06 UTC5.3 km83 km SSE of Adak, Alaska M4.02025-03-20 06:50:29 UTC0.8 km87 km SSE of Adak, Alaska M2.62025-03-20 07:09:19 UTC21.3 km109 km SSE of Adak, Alaska M2.72025-03-20 07:35:22 UTC3.4 km90 km SSE of Adak, Alaska M3.92025-03-20 07:58:00 UTC7.1 km81 km SSE of Adak, Alaska M3.82025-03-20 08:11:33 UTC4.4 km83 km SSE of Adak, Alaska M2.62025-03-20 08:26:05 UTC25.3 km112 km SSE of Adak, Alaska M3.52025-03-20 08:33:21 UTC9.4 km80 km SSE of Adak, Alaska M3.72025-03-20 08:34:33 UTC13.1 km98 km SSE of Adak, Alaska M2.92025-03-20 08:35:39 UTC6.9 km94 km SSE of Adak, Alaska M3.02025-03-20 08:42:32 UTC12.7 km99 km SSE of Adak, Alaska

Comparison of seismic sources

2 sources currently report magnitudes from M5.1 to M5.2.

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

SourceMagnitudeDepthPosition difference
USPM5.110.0 km2.0 km
USGSM5.220.0 km0.0 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#3
Earlier events M≥412
Earlier events M≥55
Compared since2025-01-02

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

Strongest earlier events

M5.62025-03-20 04:28:54 UTC12.0 km M5.62025-03-20 04:28:52 UTC1.3 km87 km SSE of Adak, Alaska M5.12025-03-20 05:13:06 UTC65.4 kmUnorganized Borough M5.02025-03-19 08:13:08 UTC12.3 km98 km SSE of Adak, Alaska M5.02025-02-27 21:48:30 UTC123.8 km53 km NE of Adak, Alaska

Stats (last 24h)

Global (24h)
640
Country (24h)
—
—
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