M2.1 Depth: 64.0 km

M2.1 Earthquake near 41 km NW of Karluk, Alaska (United States)

UTC time: 2025-10-21 03:54:39 UTC Local time: —

About this earthquake

On October 21, 2025 at 03:54 UTC, a magnitude M2.1 earthquake occurred near 41 km NW of Karluk, Alaska (United States). With a focal depth of about 64 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 180 earthquakes, the strongest at M4.7.

Details

Magnitude

M2.1

Depth

64.0 km

UTC time

2025-10-21 03:54:39 UTC

Local time

—

Country

United States

City

Alaska

Source

usgs

Coordinates

57.86420, -154.88810

Temperature

1.1°C

Map

Depth profile

Shallow

64 km

64 km — deeper 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: 31 km ·Lava dome ·Elevation: 402 m ·United States
Mageik

Distance: 43 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
Trident

Distance: 43 km ·Stratovolcano ·Elevation: 1'864 m ·Last eruption: 1974 ·United States
Martin

Distance: 44 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
Katmai

Distance: 46 km ·Stratovolcano ·Elevation: 2'047 m ·Last eruption: 1912 ·United States
Novarupta

Distance: 47 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.

Stats (last 24h)

Global (24h)

583

Country (24h)