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M3.1 Depth: 11.7 km

M3.1 Earthquake near 118 km SE of Old Harbor, Alaska

UTC time: 2025-09-01 11:16:43 UTC Local time: —

About this earthquake

On September 1, 2025 at 11:16 UTC, a magnitude M3.1 earthquake occurred near 118 km SE of Old Harbor, Alaska. With a focal depth of about 12 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Shaking of this size is frequently noticed but usually harmless.

The event was recorded by USGS.

Details

Magnitude
M3.1
Depth
11.7 km
UTC time
2025-09-01 11:16:43 UTC
Local time
—
Country
—
Source
usgs
Coordinates
56.37590, -152.07540
Temperature
14.3°C

Map

Depth profile

Depth profile Depth: 11.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 11.7 km
Shallow
11.7 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: 261 km ·Lava dome ·Elevation: 402 m ·United States
  • Steller
    Distance: 267 km ·Stratovolcano ·Elevation: 2'279 m ·United States
  • Denison
    Distance: 268 km ·Stratovolcano ·Elevation: 2'287 m ·United States
  • Snowy Mountain
    Distance: 268 km ·Stratovolcano(es) ·Elevation: 2'162 m ·Last eruption: 1710 ·United States
  • Kukak
    Distance: 268 km ·Stratovolcano ·Elevation: 2'043 m ·United States
  • Katmai
    Distance: 273 km ·Stratovolcano ·Elevation: 2'047 m ·Last eruption: 1912 ·United States

Stats (last 24h)

Global (24h)
602
Country (24h)
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