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M5.5 Earthquake near ANDREANOF ISLANDS, ALEUTIAN IS. (United States)

UTC time: 2025-11-23 08:21:46 UTC Local time: —
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded Content updated:

Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.

Map

M5.5 Earthquake near ANDREANOF ISLANDS, ALEUTIAN IS. (United States) · 2025-11-23 — Map showing the location of the epicenter
M5.5 Earthquake near ANDREANOF ISLANDS, ALEUTIAN IS. (United States) · 2025-11-23 — Map showing the location of the epicenter

About this earthquake

On November 23, 2025 at 08:21 UTC, a magnitude M5.5 earthquake occurred near ANDREANOF ISLANDS, ALEUTIAN IS. (United States). The hypocenter lay relatively close to the surface at around 55 km, increasing how strongly it was felt. Events of this size can cause damage near the epicenter.

The data is provided by EMSC and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 172 earthquakes, the strongest at M3.6.

Details

ID
25468431019beaab1aee4941e31af13df06c39e3
Magnitude
M5.5
Depth
54.8 km
UTC time
2025-11-23 08:21:46 UTC
Local time
—
Country
United States
City
Alaska
Source
emsc
Coordinates
51.41120, -177.06840
Temperature
5.4°C

Depth profile

Depth profile Depth: 54.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 54.8 km
Shallow
54.8 km
54.8 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

Felt reports

1felt reports at EMSC / LastQuake

Voluntary reports of feeling this earthquake. The count is not an intensity measurement and is not added to USGS DYFI reports.

Data updated: Nov 23, 2025, 8:27 AM UTC · Last checked: Sep 6, 2026, 12:18 PM UTC

Source: EMSC / LastQuake

Volcanoes nearby

  • Kanaga
    Distance: 57 km ·Stratovolcano ·Elevation: 1'307 m ·Last eruption: 2023 ·United States
  • Bobrof
    Distance: 61 km ·Stratovolcano ·Elevation: 738 m ·United States
  • Moffett
    Distance: 63 km ·Stratovolcano ·Elevation: 1'196 m ·Last eruption: -1600 ·United States
  • Takawangha
    Distance: 83 km ·Stratovolcano ·Elevation: 1'449 m ·Last eruption: 1550 ·United States
  • Tanaga
    Distance: 91 km ·Stratovolcano(es) ·Elevation: 1'806 m ·Last eruption: 1914 ·United States
  • Great Sitkin WATCH · ORANGE
    Distance: 98 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
    60.2 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 UTC4.6 kmANDREANOF ISLANDS, ALEUTIAN IS. M4.22025-11-28 04:32:53 UTC102.0 km143 km WSW of Adak, Alaska M4.22025-12-03 11:39:38 UTC142.9 km185 km WSW of Adak, Alaska M4.62025-12-03 11:39:38 UTC142.9 kmANDREANOF ISLANDS, ALEUTIAN IS. M0.72025-12-05 19:15:57 UTC95.2 km38 km ENE of Adak, Alaska M5.12025-12-15 18:03:49 UTC61.8 kmEvent of magnitude 5.1, near of Anchorage (Monde) M5.32025-12-15 18:03:52 UTC48.0 kmAndreanof Islands M4.92025-12-15 18:03:53 UTC46.9 km53 km SSE of Adak, Alaska M5.22025-12-15 18:03:54 UTC45.3 kmAndreanof Islands, Aleutian Islands M0.72025-12-16 22:35:23 UTC124.7 km144 km W of Adak, Alaska M2.92025-12-16 23:17:16 UTC9.3 km67 km SSW of Adak, Alaska M2.92025-12-16 23:17:16 UTC10.7 km63 km SSW of Adak, Alaska

Comparison of seismic sources

2 sources currently report magnitudes from M5.5 to M5.5.

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

SourceMagnitudeDepthPosition difference
USPM5.510.0 km8.2 km
EMSCM5.554.8 km0.0 km

Alaska

Context for this earthquake

04 Oct 2025 – 04 Oct 2026 · M ≥ 3.0 · 653 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

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≥534
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 UTC75.0 km88 km SSE of Adak, Alaska M6.22025-03-21 14:53:43 UTC61.1 kmAndreanof Islands, Aleutian Islands M5.82025-11-23 08:21:45 UTC9.1 km65 km SSW of Adak, Alaska M5.82025-11-23 08:21:44 UTC16.1 kmAndreanof Islands, Aleutian Islands, United States [Sea: United States] M5.72025-09-21 09:30:33 UTC65.8 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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