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M5.6 Depth: 17.0 km

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

UTC time: 2025-03-20 04:28:52 UTC Local time: —

About this earthquake

A magnitude M5.6 earthquake was recorded near 87 km SSE of Adak, Alaska on March 20, 2025 at 04:28 UTC. With a focal depth of about 17 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.

Details

Magnitude
M5.6
Depth
17.0 km
UTC time
2025-03-20 04:28:52 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.16280, -176.11000

Map

Depth profile

Depth profile Depth: 17 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 17 km
Shallow
17 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: 97 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: 120 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

Subsequent earthquakes nearby

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

First 6 hours26
First 24 hours82
First 72 hours209
Strongest subsequent eventM6.2
M5.42025-03-20 05:13:06 UTC7.7 km94 km SSE of Adak, Alaska M3.42025-03-20 05:18:43 UTC5.9 km92 km SSE of Adak, Alaska M2.72025-03-20 05:22:21 UTC10.9 km97 km SSE of Adak, Alaska M3.42025-03-20 05:26:17 UTC12.2 km98 km SSE of Adak, Alaska M3.22025-03-20 05:35:45 UTC4.6 km89 km SSE of Adak, Alaska M3.52025-03-20 05:46:50 UTC7.1 km80 km SSE of Adak, Alaska M2.22025-03-20 05:58:57 UTC5.4 km91 km SSE of Adak, Alaska M5.22025-03-20 06:07:08 UTC1.3 km87 km SSE of Adak, Alaska M2.62025-03-20 06:25:50 UTC6.6 km93 km SSE of Adak, Alaska M3.02025-03-20 06:35:06 UTC4.0 km83 km SSE of Adak, Alaska M4.02025-03-20 06:50:29 UTC1.7 km87 km SSE of Adak, Alaska M2.62025-03-20 07:09:19 UTC22.0 km109 km SSE of Adak, Alaska

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#1
Earlier events M≥49
Earlier events M≥52
Compared since2025-01-02

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

Strongest earlier events

M5.02025-03-19 08:13:08 UTC13.5 km98 km SSE of Adak, Alaska M5.02025-02-27 21:48:30 UTC122.7 km53 km NE of Adak, Alaska M4.92025-01-22 13:26:06 UTC43.2 km51 km S of Adak, Alaska M4.82025-03-19 09:20:12 UTC12.8 km76 km SSE of Adak, Alaska M4.32025-03-01 16:13:45 UTC83.6 km114 km SSW of Atka, Alaska

Stats (last 24h)

Global (24h)
654
Country (24h)
—
—
Current earthquakes in
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No recent events available.

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