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United States · Alaska

M1.3 Earthquake near Lake and Peninsula Borough, Alaska (United States)

UTC time: 2026-09-21 02:55:35 UTC Local time: —
Magnitude
M1.3
Depth
15.2 km
Source
USGS

Alaska · Lake and Peninsula Borough

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About this earthquake

A magnitude M1.3 earthquake was recorded near Lake and Peninsula Borough, Alaska (United States) on September 21, 2026 at 02:55 UTC. With a focal depth of about 15 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: over the past 24 hours, QuakeMap24 logged 187 earthquakes, the strongest at M3.3.

Depth profile

Depth profile Depth: 15.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 15.2 km
Shallow
15.2 km
15.2 km — close to 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

  • Alaska Peninsula Arc at 155.4°W
    Distance: 16 km ·Lava dome ·Elevation: 402 m ·United States
  • Ugashik-Peulik
    Distance: 43 km ·Stratovolcano ·Elevation: 1'474 m ·Last eruption: 1814 ·United States
  • Martin
    Distance: 43 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
  • Mageik
    Distance: 48 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
  • Ukinrek Maars
    Distance: 51 km ·Maar(s) ·Elevation: 91 m ·Last eruption: 1977 ·United States
  • Trident
    Distance: 57 km ·Stratovolcano ·Elevation: 1'864 m ·Last eruption: 1974 ·United States

Alaska

Context for this earthquake

21 Sep 2025 – 21 Sep 2026 · M ≥ 2.0 · 4,114 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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