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M3.1 Earthquake near KENAI PENINSULA, ALASKA (United States)

UTC time: 2025-10-31 09:37:13 UTC Local time: —

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About this earthquake

On October 31, 2025 at 09:37 UTC, a magnitude M3.1 earthquake occurred near KENAI PENINSULA, ALASKA (United States). The hypocenter lay relatively close to the surface at around 35 km, increasing how strongly it was felt. Earthquakes of this magnitude are often felt but rarely cause damage.

The event was recorded by EMSC. United States: 192 earthquakes were recorded in the past 24 hours, the strongest reaching M4.0.

Details

ID
5d5f13855112205e5a29c80bd1dbda62936c0895
Magnitude
M3.1
Depth
35.0 km
UTC time
2025-10-31 09:37:13 UTC
Local time
—
Country
United States
City
Alaska
Source
emsc
Coordinates
59.64200, -150.30760
Temperature
6.4°C

Depth profile

Depth profile Depth: 35 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 35 km
Shallow
35 km
35 km — deeper 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

  • Iliamna
    Distance: 161 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Redoubt
    Distance: 164 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Augustine
    Distance: 179 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Douglas
    Distance: 204 km ·Stratovolcano ·Elevation: 2'140 m ·United States
  • Spurr
    Distance: 213 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Fourpeaked
    Distance: 215 km ·Stratovolcano ·Elevation: 2'105 m ·Last eruption: 2006 ·United States

Alaska

Context for this earthquake

22 Sep 2025 – 22 Sep 2026 · M ≥ 3.0 · 656 Catalogue entries

Of 655 other entries for this area and period, 469 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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