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M5.8 Earthquake near 65 km SSW of Adak, Alaska

UTC time: 2025-11-23 08:21:45 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.

Magnitude
M5.8
Depth
24.1 km
Source
USGS

65 km SSW of Adak, Alaska

Map

M5.8 Earthquake near 65 km SSW of Adak, Alaska · 2025-11-23 — Map showing the location of the epicenter
M5.8 Earthquake near 65 km SSW of Adak, Alaska · 2025-11-23 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.8 earthquake was recorded near 65 km SSW of Adak, Alaska on November 23, 2025 at 08:21 UTC. The hypocenter lay relatively close to the surface at around 24 km, increasing how strongly it was felt. Events of this size can cause damage near the epicenter.

The data is provided by USGS and cross-checked across seismological networks.

Details

ID
c3eb83275e376fc8c19d92fbf7d71158ea50de9f
Magnitude
M5.8
Depth
24.1 km
UTC time
2025-11-23 08:21:45 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.33768, -177.01112
Temperature
5.2°C

Depth profile

Depth profile Depth: 24.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 24.1 km
Shallow
24.1 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

Official USGS aftershock forecast

Probability of at least one aftershock at or above the specified magnitude during the entire stated time window. This does not predict an individual earthquake.

Issued: Oct 4, 2026, 8:21 AM UTC · Last checked: Oct 4, 2026, 10:52 AM UTC

Oct 4, 2026, 9:00 AM UTC – Oct 5, 2026, 9:00 AM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.00.70 %0–0
M ≥ 4.00.07 %0–0
M ≥ 5.0< 0.01 %0–0
M ≥ 6.0< 0.01 %0–0
M ≥ 7.0< 0.01 %0–0
Oct 4, 2026, 9:00 AM UTC – Oct 11, 2026, 9:00 AM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.04.73 %0–1
M ≥ 4.00.49 %0–0
M ≥ 5.00.05 %0–0
M ≥ 6.0< 0.01 %0–0
M ≥ 7.0< 0.01 %0–0
Oct 4, 2026, 9:00 AM UTC – Nov 3, 2026, 9:00 AM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.017.96 %0–1
M ≥ 4.02.00 %0–0
M ≥ 5.00.20 %0–0
M ≥ 6.00.02 %0–0
M ≥ 7.0< 0.01 %0–0
Oct 4, 2026, 9:00 AM UTC – Oct 4, 2027, 9:00 AM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.077.66 %0–6
M ≥ 4.016.05 %0–1
M ≥ 5.01.77 %0–0
M ≥ 6.00.18 %0–0
M ≥ 7.00.02 %0–0

The range is the 95% forecast interval for the number of earthquakes. Magnitude thresholds and time windows overlap: do not add the values. Windows already in progress still refer to the entire stated period.

Source: USGS — Operational Aftershock Forecast

Volcanoes nearby

  • Kanaga
    Distance: 66 km ·Stratovolcano ·Elevation: 1'307 m ·Last eruption: 2023 ·United States
  • Moffett
    Distance: 70 km ·Stratovolcano ·Elevation: 1'196 m ·Last eruption: -1600 ·United States
  • Bobrof
    Distance: 70 km ·Stratovolcano ·Elevation: 738 m ·United States
  • Takawangha
    Distance: 91 km ·Stratovolcano ·Elevation: 1'449 m ·Last eruption: 1550 ·United States
  • Tanaga
    Distance: 99 km ·Stratovolcano(es) ·Elevation: 1'806 m ·Last eruption: 1914 ·United States
  • Great Sitkin WATCH · ORANGE
    Distance: 102 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
    65.8 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 hours3
First 24 hours3
First 72 hours3
Strongest subsequent eventM5.5
M5.52025-11-23 08:21:46 UTC23.5 kmAndreanof Islands, Aleutian Islands M5.52025-11-23 08:21:46 UTC9.1 kmANDREANOF ISLANDS, ALEUTIAN IS. M4.02025-11-23 10:44:13 UTC8.5 kmANDREANOF ISLANDS, ALEUTIAN IS. M4.22025-11-28 04:32:53 UTC106.1 km143 km WSW of Adak, Alaska M4.22025-12-03 11:39:38 UTC146.1 km185 km WSW of Adak, Alaska M4.62025-12-03 11:39:38 UTC146.1 kmANDREANOF ISLANDS, ALEUTIAN IS. M0.72025-12-05 19:15:57 UTC99.2 km38 km ENE of Adak, Alaska M5.12025-12-15 18:03:49 UTC54.1 kmEvent of magnitude 5.1, near of Anchorage (Monde) M5.32025-12-15 18:03:52 UTC44.9 kmAndreanof Islands M4.92025-12-15 18:03:53 UTC43.9 km53 km SSE of Adak, Alaska M5.22025-12-15 18:03:54 UTC45.5 kmAndreanof Islands, Aleutian Islands M0.72025-12-16 22:35:23 UTC131.7 km144 km W 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≥470
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 UTC68.5 km88 km SSE of Adak, Alaska M6.22025-03-21 14:53:43 UTC56.6 kmAndreanof Islands, Aleutian Islands M5.82025-11-23 08:21:44 UTC7.3 kmAndreanof Islands, Aleutian Islands, United States [Sea: United States] M5.72025-09-21 09:30:33 UTC68.6 kmAndreanof Islands, Aleutian Islands, United States [Sea: United States] M5.62025-09-21 09:30:27 UTC71.7 km123 km SW of Adak, Alaska

Stats (last 24h)

Global (24h)
450
Country (24h)
—
—
Current earthquakes in
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