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M1.8 Earthquake near 79 km WNW of Tyonek, Alaska (United States)

UTC time: 2025-08-07 09:38:38 UTC Local time: —

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About this earthquake

A magnitude M1.8 earthquake was recorded near 79 km WNW of Tyonek, Alaska (United States) on August 7, 2025 at 09:38 UTC. With a focal depth of about 6 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 189 earthquakes were recorded in the past 24 hours, the strongest reaching M4.0.

Details

ID
29ab86f695d15eb923238dc9e2fb3d6f213ae2bd
Magnitude
M1.8
Depth
5.9 km
UTC time
2025-08-07 09:38:38 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
61.30340, -152.52990
Temperature
2.8°C

Depth profile

Depth profile Depth: 5.9 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 5.9 km
Shallow
5.9 km
5.9 km — shallower 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

Volcanoes nearby

  • Spurr
    Distance: 15 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Hayes
    Distance: 38 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Redoubt
    Distance: 92 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 145 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Augustine
    Distance: 221 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Douglas
    Distance: 278 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

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

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Historic earthquake map · United States

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Country statistics · United States

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