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M2.1 Depth: 121.2 km

M2.1 Earthquake near 78 km ENE of Ugashik, Alaska (United States)

UTC time: 2025-10-31 01:48:53 UTC Local time: —

About this earthquake

On October 31, 2025 at 01:48 UTC, a magnitude M2.1 earthquake occurred near 78 km ENE of Ugashik, Alaska (United States). The earthquake originated at an intermediate depth of about 121 km. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: 170 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Details

Magnitude
M2.1
Depth
121.2 km
UTC time
2025-10-31 01:48:53 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
57.82800, -156.22310
Temperature
0.4°C

Map

Depth profile

Depth profile Depth: 121.2 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 121.2 km
Intermediate
121.2 km
121.2 km — deeper than the regional average (15.5 km)
Regional average: 15.5 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

  • Ugashik-Peulik
    Distance: 12 km ·Stratovolcano ·Elevation: 1'474 m ·Last eruption: 1814 ·United States
  • Ukinrek Maars
    Distance: 18 km ·Maar(s) ·Elevation: 91 m ·Last eruption: 1977 ·United States
  • Alaska Peninsula Arc at 155.4°W
    Distance: 48 km ·Lava dome ·Elevation: 402 m ·United States
  • Martin
    Distance: 64 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
  • Mageik
    Distance: 70 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
  • Kialagvik
    Distance: 76 km ·Stratovolcano ·Elevation: 1'677 m ·United States

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

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

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