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M3.4 Depth: 25.8 km

M3.4 Earthquake near 100 km S of Adak, Alaska

UTC time: 2025-09-28 20:31:17 UTC Local time: —

About this earthquake

On September 28, 2025 at 20:31 UTC, a magnitude M3.4 earthquake occurred near 100 km S of Adak, Alaska. With a focal depth of about 26 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
M3.4
Depth
25.8 km
UTC time
2025-09-28 20:31:17 UTC
Local time
—
Country
—
Source
usgs
Coordinates
50.98700, -176.89310
Temperature
10.4°C

Map

Depth profile

Depth profile Depth: 25.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 25.8 km
Shallow
25.8 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

  • Kanaga
    Distance: 106 km ·Stratovolcano ·Elevation: 1'307 m ·Last eruption: 2023 ·United States
  • Moffett
    Distance: 107 km ·Stratovolcano ·Elevation: 1'196 m ·Last eruption: -1600 ·United States
  • Bobrof
    Distance: 109 km ·Stratovolcano ·Elevation: 738 m ·United States
  • Takawangha
    Distance: 125 km ·Stratovolcano ·Elevation: 1'449 m ·Last eruption: 1550 ·United States
  • Great Sitkin WATCH · ORANGE
    Distance: 132 km ·Stratovolcano ·Elevation: 1'740 m ·Last eruption: 2026 ·United States
  • Tanaga
    Distance: 132 km ·Stratovolcano(es) ·Elevation: 1'806 m ·Last eruption: 1914 ·United States

Stats (last 24h)

Global (24h)
650
Country (24h)
—
—
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