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M4.1 Depth: 54.5 km

M4.1 Earthquake near 42 km SE of Adak, Alaska

UTC time: 2025-02-28 02:00:27 UTC Local time: —

About this earthquake

A magnitude M4.1 earthquake was recorded near 42 km SE of Adak, Alaska on February 28, 2025 at 02:00 UTC. The hypocenter lay relatively close to the surface at around 55 km, increasing how strongly it was felt. Earthquakes of this magnitude are clearly felt; minor damage to vulnerable buildings is possible.

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

Details

Magnitude
M4.1
Depth
54.5 km
UTC time
2025-02-28 02:00:27 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.62960, -176.15510

Map

Depth profile

Depth profile Depth: 54.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 54.5 km
Shallow
54.5 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

  • Great Sitkin WATCH · ORANGE
    Distance: 50 km ·Stratovolcano ·Elevation: 1'740 m ·Last eruption: 2026 ·United States
  • Moffett
    Distance: 54 km ·Stratovolcano ·Elevation: 1'196 m ·Last eruption: -1600 ·United States
  • Kasatochi
    Distance: 75 km ·Stratovolcano ·Elevation: 314 m ·Last eruption: 2008 ·United States
  • Kanaga
    Distance: 77 km ·Stratovolcano ·Elevation: 1'307 m ·Last eruption: 2023 ·United States
  • Bobrof
    Distance: 94 km ·Stratovolcano ·Elevation: 738 m ·United States
  • Koniuji
    Distance: 96 km ·Stratovolcano ·Elevation: 273 m ·Last eruption: -1150 ·United States

Stats (last 24h)

Global (24h)
652
Country (24h)
—
—
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