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United States · Alaska

M1.5 Earthquake near Unorganized Borough, Alaska (United States)

UTC time: 2026-10-21 01:55:11 UTC Local time: —

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About this earthquake

On October 21, 2026 at 01:55 UTC, a magnitude M1.5 earthquake occurred near Unorganized Borough, Alaska (United States). With a focal depth of about 13 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 155 earthquakes were recorded in the past 24 hours, the strongest reaching M5.3.

Depth profile

Depth profile Depth: 13.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 13.1 km
Shallow
13.1 km
13.1 km — close to the regional average (15.3 km)
Regional average: 15.3 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

  • Wrangell
    Distance: 31 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Churchill
    Distance: 108 km ·Stratovolcano ·Elevation: 5'005 m ·Last eruption: 847 ·United States
  • Fort Selkirk
    Distance: 339 km ·Volcanic field ·Elevation: 1'239 m ·Canada
  • Buzzard Creek
    Distance: 349 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Alligator Lake
    Distance: 463 km ·Volcanic field ·Elevation: 2'217 m ·Canada
  • Spurr
    Distance: 465 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States

Alaska

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 2.0 · 4,148 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

Historic earthquake map · United States

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Country statistics · United States

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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