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M3.5 Depth: 0.0 km

M3.5 Earthquake near 56 km W of Karluk, Alaska (United States)

UTC time: 2025-10-21 23:46:11 UTC Local time: —

About this earthquake

A magnitude M3.5 earthquake was recorded near 56 km W of Karluk, Alaska (United States) on October 21, 2025 at 23:46 UTC. Earthquakes of this magnitude are often felt but rarely cause damage.

The event was recorded by USGS. United States: 189 earthquakes were recorded in the past 24 hours, the strongest reaching M4.7.

Details

Magnitude
M3.5
Depth
0.0 km
UTC time
2025-10-21 23:46:11 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
57.64790, -155.39260
Temperature
3.9°C

Map

Depth profile

Depth profile Depth: 0 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 0 km
Shallow
0 km
0 km — shallower than the regional average (15.4 km)
Regional average: 15.4 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: 25 km ·Lava dome ·Elevation: 402 m ·United States
  • Martin
    Distance: 58 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
  • Ugashik-Peulik
    Distance: 59 km ·Stratovolcano ·Elevation: 1'474 m ·Last eruption: 1814 ·United States
  • Mageik
    Distance: 61 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
  • Trident
    Distance: 68 km ·Stratovolcano ·Elevation: 1'864 m ·Last eruption: 1974 ·United States
  • Novarupta
    Distance: 70 km ·Caldera ·Elevation: 841 m ·Last eruption: 1912 ·United States

Historic earthquake map · United States

Open history map
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

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

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