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M3.9 Depth: 35.0 km

M3.9 Earthquake near 158 km WSW of Adak, Alaska

UTC time: 2025-04-20 23:28:33 UTC Local time: —

About this earthquake

A magnitude M3.9 earthquake was recorded near 158 km WSW of Adak, Alaska on April 20, 2025 at 23:28 UTC. With a focal depth of about 35 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 event was recorded by USGS.

Details

Magnitude
M3.9
Depth
35.0 km
UTC time
2025-04-20 23:28:33 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.17210, -178.62790

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

  • Gareloi
    Distance: 70 km ·Stratovolcano ·Elevation: 1'573 m ·Last eruption: 1989 ·United States
  • Tanaga
    Distance: 86 km ·Stratovolcano(es) ·Elevation: 1'806 m ·Last eruption: 1914 ·United States
  • Takawangha
    Distance: 89 km ·Stratovolcano ·Elevation: 1'449 m ·Last eruption: 1550 ·United States
  • Bobrof
    Distance: 116 km ·Stratovolcano ·Elevation: 738 m ·United States
  • Kanaga
    Distance: 131 km ·Stratovolcano ·Elevation: 1'307 m ·Last eruption: 2023 ·United States
  • Moffett
    Distance: 156 km ·Stratovolcano ·Elevation: 1'196 m ·Last eruption: -1600 ·United States

Stats (last 24h)

Global (24h)
653
Country (24h)
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