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United States · Alaska

M1.0 Earthquake near Lake and Peninsula Borough, Alaska (United States)

UTC time: 2026-09-20 01:15:55 UTC Local time: —
Magnitude
M1.0
Depth
5.8 km
Source
USGS

Alaska · Lake and Peninsula Borough

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About this earthquake

A magnitude M1.0 earthquake was recorded near Lake and Peninsula Borough, Alaska (United States) on September 20, 2026 at 01:15 UTC. The hypocenter lay relatively close to the surface at around 6 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 197 earthquakes were recorded in the past 24 hours, the strongest reaching M3.1.

Depth profile

Depth profile Depth: 5.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 5.8 km
Shallow
5.8 km
5.8 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

  • Denison
    Distance: 3 km ·Stratovolcano ·Elevation: 2'287 m ·United States
  • Steller
    Distance: 6 km ·Stratovolcano ·Elevation: 2'279 m ·United States
  • Kukak
    Distance: 9 km ·Stratovolcano ·Elevation: 2'043 m ·United States
  • Snowy Mountain
    Distance: 14 km ·Stratovolcano(es) ·Elevation: 2'162 m ·Last eruption: 1710 ·United States
  • Katmai
    Distance: 31 km ·Stratovolcano ·Elevation: 2'047 m ·Last eruption: 1912 ·United States
  • Kaguyak
    Distance: 35 km ·Lava dome(s) ·Elevation: 901 m ·Last eruption: -3850 ·United States

Alaska

Context for this earthquake

20 Sep 2025 – 20 Sep 2026 · M ≥ 2.0 · 4,107 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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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · United States

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

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