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M3.1 Depth: 10.0 km

M3.1 Earthquake near 132 km SSE of Old Harbor, Alaska

UTC time: 2025-09-03 09:45:44 UTC Local time: —

About this earthquake

A magnitude M3.1 earthquake was recorded near 132 km SSE of Old Harbor, Alaska on September 3, 2025 at 09:45 UTC. With a focal depth of about 10 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude are often felt but rarely cause damage.

The data is provided by USGS and cross-checked across seismological networks.

Details

Magnitude
M3.1
Depth
10.0 km
UTC time
2025-09-03 09:45:44 UTC
Local time
—
Country
—
Source
usgs
Coordinates
56.18920, -152.17890
Temperature
14.4°C

Map

Depth profile

Depth profile Depth: 10 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 10 km
Shallow
10 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: 270 km ·Lava dome ·Elevation: 402 m ·United States
  • Snowy Mountain
    Distance: 282 km ·Stratovolcano(es) ·Elevation: 2'162 m ·Last eruption: 1710 ·United States
  • Steller
    Distance: 282 km ·Stratovolcano ·Elevation: 2'279 m ·United States
  • Denison
    Distance: 283 km ·Stratovolcano ·Elevation: 2'287 m ·United States
  • Kukak
    Distance: 284 km ·Stratovolcano ·Elevation: 2'043 m ·United States
  • Katmai
    Distance: 286 km ·Stratovolcano ·Elevation: 2'047 m ·Last eruption: 1912 ·United States

Stats (last 24h)

Global (24h)
593
Country (24h)
—
—
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