M1.0 Depth: 30.1 km

M1.0 Earthquake near 15 km SSW of Nelchina, Alaska (United States)

UTC time: 2025-08-21 06:17:54 UTC Local time: —

About this earthquake

On August 21, 2025 at 06:17 UTC, a magnitude M1.0 earthquake occurred near 15 km SSW of Nelchina, Alaska (United States). The hypocenter lay relatively close to the surface at around 30 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 196 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

Magnitude

M1.0

Depth

30.1 km

UTC time

2025-08-21 06:17:54 UTC

Local time

—

Country

United States

City

Alaska

Source

usgs

Coordinates

61.86440, -146.87910

Temperature

7.2°C

Map

Depth profile

Shallow

30.1 km

30.1 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

Wrangell

Distance: 151 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
Buzzard Creek

Distance: 257 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
Churchill

Distance: 276 km ·Stratovolcano ·Elevation: 5'005 m ·Last eruption: 847 ·United States
Spurr

Distance: 291 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
Hayes

Distance: 292 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
Redoubt

Distance: 350 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·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)

727

Country (24h)