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M2.1 Depth: 56.9 km

M2.1 Earthquake near 18 km NNW of Karluk, Alaska (United States)

UTC time: 2025-08-31 03:02:47 UTC Local time: —

About this earthquake

A magnitude M2.1 earthquake was recorded near 18 km NNW of Karluk, Alaska (United States) on August 31, 2025 at 03:02 UTC. With a focal depth of about 57 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 247 earthquakes were recorded in the past 24 hours, the strongest reaching M3.9.

Details

Magnitude
M2.1
Depth
56.9 km
UTC time
2025-08-31 03:02:47 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
57.71950, -154.60070
Temperature
12.6°C

Map

Depth profile

Depth profile Depth: 56.9 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 56.9 km
Shallow
56.9 km
56.9 km — deeper than the regional average (15.4 km)
Regional average: 15.4 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

  • Alaska Peninsula Arc at 155.4°W
    Distance: 51 km ·Lava dome ·Elevation: 402 m ·United States
  • Trident
    Distance: 65 km ·Stratovolcano ·Elevation: 1'864 m ·Last eruption: 1974 ·United States
  • Mageik
    Distance: 65 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
  • Katmai
    Distance: 66 km ·Stratovolcano ·Elevation: 2'047 m ·Last eruption: 1912 ·United States
  • Martin
    Distance: 67 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
  • Snowy Mountain
    Distance: 69 km ·Stratovolcano(es) ·Elevation: 2'162 m ·Last eruption: 1710 ·United States

Historic earthquake map · United States

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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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