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M3.9 Depth: 12.0 km

M3.9 Earthquake near 122 km SE of Old Harbor, Alaska

UTC time: 2025-09-01 11:08:50 UTC Local time: —

About this earthquake

On September 1, 2025 at 11:08 UTC, a magnitude M3.9 earthquake occurred near 122 km SE of Old Harbor, Alaska. The hypocenter lay relatively close to the surface at around 12 km, increasing how strongly it was felt. Earthquakes of this magnitude are often felt but rarely cause damage.

The event was recorded by USGS.

Details

Magnitude
M3.9
Depth
12.0 km
UTC time
2025-09-01 11:08:50 UTC
Local time
—
Country
—
Source
usgs
Coordinates
56.33140, -152.08780
Temperature
14.3°C

Map

Depth profile

Depth profile Depth: 12 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 12 km
Shallow
12 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: 264 km ·Lava dome ·Elevation: 402 m ·United States
  • Steller
    Distance: 271 km ·Stratovolcano ·Elevation: 2'279 m ·United States
  • Denison
    Distance: 272 km ·Stratovolcano ·Elevation: 2'287 m ·United States
  • Snowy Mountain
    Distance: 272 km ·Stratovolcano(es) ·Elevation: 2'162 m ·Last eruption: 1710 ·United States
  • Kukak
    Distance: 272 km ·Stratovolcano ·Elevation: 2'043 m ·United States
  • Katmai
    Distance: 277 km ·Stratovolcano ·Elevation: 2'047 m ·Last eruption: 1912 ·United States

Stats (last 24h)

Global (24h)
602
Country (24h)
—
—
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