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M2.5 Depth: 114.3 km

M2.5 Earthquake near 46 km S of Old Harbor, Alaska

UTC time: 2025-09-17 17:28:43 UTC Local time: —

About this earthquake

On September 17, 2025 at 17:28 UTC, a magnitude M2.5 earthquake occurred near 46 km S of Old Harbor, Alaska. The earthquake originated at an intermediate depth of about 114 km. Events of this size typically go unnoticed.

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

Details

Magnitude
M2.5
Depth
114.3 km
UTC time
2025-09-17 17:28:43 UTC
Local time
—
Country
—
Source
usgs
Coordinates
56.78450, -153.20900
Temperature
11.4°C

Map

Depth profile

Depth profile Depth: 114.3 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 114.3 km
Intermediate
114.3 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

  • Alaska Peninsula Arc at 155.4°W
    Distance: 179 km ·Lava dome ·Elevation: 402 m ·United States
  • Snowy Mountain
    Distance: 194 km ·Stratovolcano(es) ·Elevation: 2'162 m ·Last eruption: 1710 ·United States
  • Steller
    Distance: 196 km ·Stratovolcano ·Elevation: 2'279 m ·United States
  • Denison
    Distance: 196 km ·Stratovolcano ·Elevation: 2'287 m ·United States
  • Katmai
    Distance: 196 km ·Stratovolcano ·Elevation: 2'047 m ·Last eruption: 1912 ·United States
  • Trident
    Distance: 197 km ·Stratovolcano ·Elevation: 1'864 m ·Last eruption: 1974 ·United States

Stats (last 24h)

Global (24h)
593
Country (24h)
—
—
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