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United States · Alaska

M2.3 Earthquake near Lake and Peninsula Borough, Alaska (United States)

UTC time: 2026-09-28 05:38:53 UTC Local time: —
Magnitude
M2.3
Depth
153.6 km
Source
USGS

Alaska · Lake and Peninsula Borough

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About this earthquake

A magnitude M2.3 earthquake was recorded near Lake and Peninsula Borough, Alaska (United States) on September 28, 2026 at 05:38 UTC. At around 154 km, the focal depth places this among intermediate-depth events. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 177 earthquakes were recorded in the past 24 hours, the strongest reaching M4.8.

Depth profile

Depth profile Depth: 153.6 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 153.6 km
Intermediate
153.6 km
153.6 km — deeper than the regional average (15.2 km)
Regional average: 15.2 km
Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Volcanoes nearby

  • Martin
    Distance: 36 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
  • Griggs
    Distance: 37 km ·Stratovolcano ·Elevation: 2'317 m ·Last eruption: -1790 ·United States
  • Novarupta
    Distance: 37 km ·Caldera ·Elevation: 841 m ·Last eruption: 1912 ·United States
  • Mageik
    Distance: 38 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
  • Trident
    Distance: 42 km ·Stratovolcano ·Elevation: 1'864 m ·Last eruption: 1974 ·United States
  • Katmai
    Distance: 47 km ·Stratovolcano ·Elevation: 2'047 m ·Last eruption: 1912 ·United States

Alaska

Context for this earthquake

28 Sep 2025 – 28 Sep 2026 · M ≥ 2.0 · 4,155 Catalogue entries

Of 4,154 other entries for this area and period, 1,959 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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