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United States · Alaska

M3.1 Earthquake near Unalaska, Alaska (United States)

UTC time: 2026-09-07 02:08:48 UTC Local time: —

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About this earthquake

On September 7, 2026 at 02:08 UTC, a magnitude M3.1 earthquake occurred near Unalaska, Alaska (United States). The hypocenter lay relatively close to the surface at around 8 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 158 earthquakes, the strongest at M3.3.

Details

ID
7c680cd4d8518e39994d571ccefd7298e1e9bdc2
Magnitude
M3.1
Depth
8.4 km
UTC time
2026-09-07 02:08:48 UTC
Local time
—
Country
United States
State
Alaska
City
Unalaska
County
Unorganized Borough
Source
usgs
Coordinates
53.90067, -166.63083
Temperature
10.7°C

Depth profile

Depth profile Depth: 8.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8.4 km
Shallow
8.4 km
8.4 km — shallower than the regional average (15.3 km)
Regional average: 15.3 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

  • Makushin
    Distance: 19 km ·Stratovolcano ·Elevation: 1'800 m ·Last eruption: 1995 ·United States
  • Akutan
    Distance: 49 km ·Stratovolcano ·Elevation: 1'303 m ·Last eruption: 1992 ·United States
  • Bogoslof
    Distance: 92 km ·Stratovolcano ·Elevation: 150 m ·Last eruption: 2017 ·United States
  • Okmok
    Distance: 112 km ·Shield ·Elevation: 1'073 m ·Last eruption: 2008 ·United States
  • Westdahl
    Distance: 146 km ·Stratovolcano? ·Elevation: 1'563 m ·Last eruption: 1992 ·United States
  • Recheschnoi
    Distance: 151 km ·Stratovolcano ·Elevation: 1'984 m ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Tom Madsen (Dutch Harbor) AirportUnited States · DUT · PADU
    5.6 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-07

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

07 Sep 2025 – 07 Sep 2026 · M ≥ 3.0 · 653 Catalogue entries

Of 652 other entries for this area and period, 535 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

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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