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United States · Alaska

M1.6 Earthquake near Unorganized Borough, Alaska (United States)

UTC time: 2026-09-21 00:57:40 UTC Local time: —

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About this earthquake

On September 21, 2026 at 00:57 UTC, a magnitude M1.6 earthquake occurred near Unorganized Borough, Alaska (United States). The hypocenter lay relatively close to the surface at around 5 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 183 earthquakes, the strongest at M5.3.

Depth profile

Depth profile Depth: 5.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 5.3 km
Shallow
5.3 km
5.3 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

  • Buzzard Creek
    Distance: 154 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Wrangell
    Distance: 434 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Hayes
    Distance: 471 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States

Alaska

Context for this earthquake

21 Sep 2025 – 21 Sep 2026 · M ≥ 2.0 · 4,112 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

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