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M5.5 Earthquake near Andreanof Islands, Aleutian Islands (United States)

UTC time: 2025-11-23 08:21:46 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

M5.5 Earthquake near Andreanof Islands, Aleutian Islands (United States) · 2025-11-23 — Map showing the location of the epicenter
M5.5 Earthquake near Andreanof Islands, Aleutian Islands (United States) · 2025-11-23 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.5 earthquake was recorded near Andreanof Islands, Aleutian Islands (United States) on November 23, 2025 at 08:21 UTC. The hypocenter lay relatively close to the surface at around 50 km, increasing how strongly it was felt. Events of this size can cause damage near the epicenter.

The event was recorded by GFZ. United States: 160 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Details

ID
f31fb60289ed629af429cfddde3b975696fd8064
Magnitude
M5.5
Depth
50.0 km
UTC time
2025-11-23 08:21:46 UTC
Local time
—
Country
United States
City
Alaska
Source
gfz
Coordinates
51.53000, -177.15000
Temperature
5.4°C

Depth profile

Depth profile Depth: 50 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 50 km
Shallow
50 km
50 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

  • Kanaga
    Distance: 44 km ·Stratovolcano ·Elevation: 1'307 m ·Last eruption: 2023 ·United States
  • Bobrof
    Distance: 47 km ·Stratovolcano ·Elevation: 738 m ·United States
  • Moffett
    Distance: 54 km ·Stratovolcano ·Elevation: 1'196 m ·Last eruption: -1600 ·United States
  • Takawangha
    Distance: 70 km ·Stratovolcano ·Elevation: 1'449 m ·Last eruption: 1550 ·United States
  • Tanaga
    Distance: 79 km ·Stratovolcano(es) ·Elevation: 1'806 m ·Last eruption: 1914 ·United States
  • Great Sitkin WATCH · ORANGE
    Distance: 93 km ·Stratovolcano ·Elevation: 1'740 m ·Last eruption: 2026 ·United States

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Adak AirportUnited States · ADK · PADK
    52.6 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 hours1
First 24 hours1
First 72 hours1
Strongest subsequent eventM5.3
M4.02025-11-23 10:44:13 UTC16.5 kmANDREANOF ISLANDS, ALEUTIAN IS. M4.22025-11-28 04:32:53 UTC97.7 km143 km WSW of Adak, Alaska M4.22025-12-03 11:39:38 UTC139.6 km185 km WSW of Adak, Alaska M4.62025-12-03 11:39:38 UTC139.6 kmANDREANOF ISLANDS, ALEUTIAN IS. M0.72025-12-05 19:15:57 UTC89.7 km38 km ENE of Adak, Alaska M5.12025-12-15 18:03:49 UTC74.3 kmEvent of magnitude 5.1, near of Anchorage (Monde) M5.32025-12-15 18:03:52 UTC55.0 kmAndreanof Islands M4.92025-12-15 18:03:53 UTC54.0 km53 km SSE of Adak, Alaska M5.22025-12-15 18:03:54 UTC47.8 kmAndreanof Islands, Aleutian Islands M0.72025-12-16 22:35:23 UTC114.6 km144 km W of Adak, Alaska M2.92025-12-16 23:17:16 UTC23.5 km67 km SSW of Adak, Alaska M2.92025-12-16 23:17:16 UTC24.7 km63 km SSW of Adak, Alaska

Alaska

Context for this earthquake

04 Oct 2025 – 04 Oct 2026 · M ≥ 3.0 · 654 Catalogue entries

Of 653 other entries for this area and period, 15 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#10
Earlier events M≥469
Earlier events M≥535
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 UTC85.8 km88 km SSE of Adak, Alaska M6.22025-03-21 14:53:43 UTC69.4 kmAndreanof Islands, Aleutian Islands M5.82025-11-23 08:21:45 UTC23.5 km65 km SSW of Adak, Alaska M5.82025-11-23 08:21:44 UTC30.3 kmAndreanof Islands, Aleutian Islands, United States [Sea: United States] M5.72025-09-21 09:30:33 UTC64.5 kmAndreanof Islands, Aleutian Islands, United States [Sea: United States]

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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