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M3.9 Depth: 35.0 km

M3.9 Earthquake near 102 km SSE of Adak, Alaska

UTC time: 2025-03-21 15:24:27 UTC Local time: —

About this earthquake

A magnitude M3.9 earthquake was recorded near 102 km SSE of Adak, Alaska on March 21, 2025 at 15:24 UTC. The hypocenter lay relatively close to the surface at around 35 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

The event was recorded by USGS.

Details

Magnitude
M3.9
Depth
35.0 km
UTC time
2025-03-21 15:24:27 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.02910, -176.05310

Map

Depth profile

Depth profile Depth: 35 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 35 km
Shallow
35 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

  • Moffett
    Distance: 113 km ·Stratovolcano ·Elevation: 1'196 m ·Last eruption: -1600 ·United States
  • Great Sitkin WATCH · ORANGE
    Distance: 117 km ·Stratovolcano ·Elevation: 1'740 m ·Last eruption: 2026 ·United States
  • Kanaga
    Distance: 126 km ·Stratovolcano ·Elevation: 1'307 m ·Last eruption: 2023 ·United States
  • Kasatochi
    Distance: 133 km ·Stratovolcano ·Elevation: 314 m ·Last eruption: 2008 ·United States
  • Bobrof
    Distance: 137 km ·Stratovolcano ·Elevation: 738 m ·United States
  • Koniuji
    Distance: 147 km ·Stratovolcano ·Elevation: 273 m ·Last eruption: -1150 ·United States

Stats (last 24h)

Global (24h)
650
Country (24h)
—
—
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