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M2.5 Earthquake near 48 km W of Tyonek, Alaska (United States)

UTC time: 2025-10-31 22:46:48 UTC Local time: —

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About this earthquake

On October 31, 2025 at 22:46 UTC, a magnitude M2.5 earthquake occurred near 48 km W of Tyonek, Alaska (United States). The earthquake originated at an intermediate depth of about 120 km. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 187 earthquakes, the strongest at M4.0.

Details

ID
dcfa40e3ab7158c2ce5954beef4daf03a2eae0af
Magnitude
M2.5
Depth
119.7 km
UTC time
2025-10-31 22:46:48 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
61.08000, -152.02960
Temperature
7.2°C

Depth profile

Depth profile Depth: 119.7 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 119.7 km
Intermediate
119.7 km
119.7 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

  • Spurr
    Distance: 27 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Hayes
    Distance: 66 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Redoubt
    Distance: 77 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 130 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Augustine
    Distance: 206 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Douglas
    Distance: 261 km ·Stratovolcano ·Elevation: 2'140 m ·United States

Alaska

Context for this earthquake

22 Sep 2025 – 22 Sep 2026 · M ≥ 2.0 · 4,126 Catalogue entries

Of 4,125 other entries for this area and period, 1,318 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · United States

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Country statistics · United States

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View earthquake KPIs, strongest and latest events, and averages for this country.

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