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M4.2 Earthquake near 143 km WSW of Adak, Alaska (United States)

UTC time: 2025-11-28 04:32:53 UTC Local time: —

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About this earthquake

A magnitude M4.2 earthquake was recorded near 143 km WSW of Adak, Alaska (United States) on November 28, 2025 at 04:32 UTC. With a focal depth of about 54 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude are clearly felt; minor damage to vulnerable buildings is possible.

The event was recorded by USGS. United States: 160 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Details

ID
bff9f50ee18029f4e7d7d4d7a62116c4614d1f52
Magnitude
M4.2
Depth
54.1 km
UTC time
2025-11-28 04:32:53 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
51.37230, -178.53770
Temperature
5.2°C

Depth profile

Depth profile Depth: 54.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 54.1 km
Shallow
54.1 km
54.1 km — deeper than the regional average (15.2 km)
Regional average: 15.2 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 ADVISORY · YELLOW
    Distance: 50 km ·Stratovolcano ·Elevation: 1'573 m ·Last eruption: 1989 ·United States
  • Tanaga
    Distance: 63 km ·Stratovolcano(es) ·Elevation: 1'806 m ·Last eruption: 1914 ·United States
  • Takawangha
    Distance: 67 km ·Stratovolcano ·Elevation: 1'449 m ·Last eruption: 1550 ·United States
  • Bobrof
    Distance: 97 km ·Stratovolcano ·Elevation: 738 m ·United States
  • Kanaga
    Distance: 113 km ·Stratovolcano ·Elevation: 1'307 m ·Last eruption: 2023 ·United States
  • Moffett
    Distance: 139 km ·Stratovolcano ·Elevation: 1'196 m ·Last eruption: -1600 ·United States

Alaska

Context for this earthquake

04 Oct 2025 – 04 Oct 2026 · M ≥ 3.0 · 654 Catalogue entries

Of 653 other entries for this area and period, 127 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · United States

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