Back to map
M4.0 Depth: 35.0 km

M4.0 Earthquake near 87 km SSE of Adak, Alaska

UTC time: 2025-03-20 06:50:29 UTC Local time: —

About this earthquake

On March 20, 2025 at 06:50 UTC, a magnitude M4.0 earthquake occurred near 87 km SSE of Adak, Alaska. The hypocenter lay relatively close to the surface at around 35 km, increasing how strongly it was felt. 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
M4.0
Depth
35.0 km
UTC time
2025-03-20 06:50:29 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.15600, -176.13220

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: 97 km ·Stratovolcano ·Elevation: 1'196 m ·Last eruption: -1600 ·United States
  • Great Sitkin WATCH · ORANGE
    Distance: 102 km ·Stratovolcano ·Elevation: 1'740 m ·Last eruption: 2026 ·United States
  • Kanaga
    Distance: 111 km ·Stratovolcano ·Elevation: 1'307 m ·Last eruption: 2023 ·United States
  • Kasatochi
    Distance: 121 km ·Stratovolcano ·Elevation: 314 m ·Last eruption: 2008 ·United States
  • Bobrof
    Distance: 123 km ·Stratovolcano ·Elevation: 738 m ·United States
  • Koniuji
    Distance: 137 km ·Stratovolcano ·Elevation: 273 m ·Last eruption: -1150 ·United States

Stats (last 24h)

Global (24h)
654
Country (24h)
—
—
Current earthquakes in
Magnitude Place Local time
No recent events available.

Share