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M4.6 Depth: 11.8 km

M4.6 Earthquake near 117 km SE of Old Harbor, Alaska

UTC time: 2025-09-17 06:35:41 UTC Local time: —

About this earthquake

A magnitude M4.6 earthquake was recorded near 117 km SE of Old Harbor, Alaska on September 17, 2025 at 06:35 UTC. With a focal depth of about 12 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Tremors of this size are distinctly felt and can occasionally cause light damage.

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

Details

Magnitude
M4.6
Depth
11.8 km
UTC time
2025-09-17 06:35:41 UTC
Local time
—
Country
—
Source
usgs
Coordinates
56.34530, -152.17600
Temperature
10.7°C

Map

Depth profile

Depth profile Depth: 11.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 11.8 km
Shallow
11.8 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: 259 km ·Lava dome ·Elevation: 402 m ·United States
  • Steller
    Distance: 267 km ·Stratovolcano ·Elevation: 2'279 m ·United States
  • Snowy Mountain
    Distance: 268 km ·Stratovolcano(es) ·Elevation: 2'162 m ·Last eruption: 1710 ·United States
  • Denison
    Distance: 268 km ·Stratovolcano ·Elevation: 2'287 m ·United States
  • Kukak
    Distance: 268 km ·Stratovolcano ·Elevation: 2'043 m ·United States
  • Katmai
    Distance: 272 km ·Stratovolcano ·Elevation: 2'047 m ·Last eruption: 1912 ·United States

Stats (last 24h)

Global (24h)
593
Country (24h)
—
—
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