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United States · Alaska

M2.9 Earthquake near Unorganized Borough, Alaska (United States)

UTC time: 2026-10-04 16:30:36 UTC Local time: —

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About this earthquake

On October 4, 2026 at 16:30 UTC, a magnitude M2.9 earthquake occurred near Unorganized Borough, Alaska (United States). With a focal depth of about 5 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: 176 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Depth profile

Depth profile Depth: 5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 5 km
Shallow
5 km
5 km — shallower 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

  • Edgecumbe
    Distance: 185 km ·Volcanic field ·Elevation: 970 m ·Last eruption: -2080 ·United States
  • Alligator Lake
    Distance: 236 km ·Volcanic field ·Elevation: 2'217 m ·Canada
  • Atlin Volcanic Field
    Distance: 258 km ·Pyroclastic cone(s) ·Elevation: 1'880 m ·Canada
  • Heart Peaks
    Distance: 306 km ·Shield ·Elevation: 2'012 m ·Canada
  • Duncan Canal
    Distance: 333 km ·Volcanic field ·Elevation: 15 m ·United States
  • Level Mountain
    Distance: 342 km ·Shield ·Elevation: 2'164 m ·Canada

Alaska

Context for this earthquake

04 Oct 2025 – 04 Oct 2026 · M ≥ 2.0 · 4,146 Catalogue entries

Of 4,145 other entries for this area and period, 662 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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Country statistics · United States

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