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M5.3 Earthquake near 29 km ESE of Unalaska, Alaska (United States)

UTC time: 2025-07-27 22:47:05 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

M5.3 Earthquake near 29 km ESE of Unalaska, Alaska (United States) · 2025-07-27 — Map showing the location of the epicenter
M5.3 Earthquake near 29 km ESE of Unalaska, Alaska (United States) · 2025-07-27 — Map showing the location of the epicenter

About this earthquake

On July 27, 2025 at 22:47 UTC, a magnitude M5.3 earthquake occurred near 29 km ESE of Unalaska, Alaska (United States). The earthquake originated at an intermediate depth of about 75 km. Events of this size can cause damage near the epicenter.

The event was recorded by USGS. United States: 228 earthquakes were recorded in the past 24 hours, the strongest reaching M5.0.

Details

ID
7e7fc884e2f638ffd5f53b82543e67a8370855b2
Magnitude
M5.3
Depth
75.0 km
UTC time
2025-07-27 22:47:05 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
53.74500, -166.13700
Temperature
12.4°C

Depth profile

Depth profile Depth: 75 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 75 km
Intermediate
75 km
75 km — deeper than the regional average (15.2 km)
Regional average: 15.2 km
Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Volcanoes nearby

  • Akutan
    Distance: 44 km ·Stratovolcano ·Elevation: 1'303 m ·Last eruption: 1992 ·United States
  • Makushin
    Distance: 54 km ·Stratovolcano ·Elevation: 1'800 m ·Last eruption: 1995 ·United States
  • Bogoslof
    Distance: 126 km ·Stratovolcano ·Elevation: 150 m ·Last eruption: 2017 ·United States
  • Westdahl
    Distance: 129 km ·Stratovolcano? ·Elevation: 1'563 m ·Last eruption: 1992 ·United States
  • Okmok
    Distance: 136 km ·Shield ·Elevation: 1'073 m ·Last eruption: 2008 ·United States
  • Fisher
    Distance: 150 km ·Stratovolcano ·Elevation: 1'112 m ·Last eruption: 1830 ·United States

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Tom Madsen (Dutch Harbor) AirportUnited States · DUT · PADU
    31.8 kmStraight-line distance
  • Akutan AirportUnited States · KQA · PAUT
    56.5 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-01

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Alaska

Context for this earthquake

01 Oct 2025 – 01 Oct 2026 · M ≥ 3.0 · 656 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#4
Earlier events M≥418
Earlier events M≥58
Compared since2025-01-14

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

Strongest earlier events

M5.62025-01-26 22:39:15 UTC94.5 km M5.62025-01-26 22:39:13 UTC92.4 km86 km SSW of Unalaska, Alaska M5.52025-07-27 22:46:57 UTC36.7 kmFox Islands, Aleutian Islands M5.32025-05-23 02:30:40 UTC116.1 km M5.22025-05-23 02:30:40 UTC116.1 kmUNIMAK ISLAND REGION, ALASKA

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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