M0.4 Depth: 3.8 km

M0.4 Earthquake near 81 km SE of King Salmon, Alaska (United States)

UTC time: 2025-08-30 09:42:41 UTC Local time: —

About this earthquake

A magnitude M0.4 earthquake was recorded near 81 km SE of King Salmon, Alaska (United States) on August 30, 2025 at 09:42 UTC. The hypocenter lay relatively close to the surface at around 4 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 247 earthquakes, the strongest at M3.9.

Details

Magnitude

M0.4

Depth

3.8 km

UTC time

2025-08-30 09:42:41 UTC

Local time

—

Country

United States

City

Alaska

Source

usgs

Coordinates

58.22810, -155.57820

Temperature

7.1°C

Map

Depth profile

Shallow

3.8 km

3.8 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

Martin

Distance: 14 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
Mageik

Distance: 19 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
Novarupta

Distance: 25 km ·Caldera ·Elevation: 841 m ·Last eruption: 1912 ·United States
Trident

Distance: 28 km ·Stratovolcano ·Elevation: 1'864 m ·Last eruption: 1974 ·United States
Griggs

Distance: 32 km ·Stratovolcano ·Elevation: 2'317 m ·Last eruption: -1790 ·United States
Katmai

Distance: 37 km ·Stratovolcano ·Elevation: 2'047 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)

1009

Country (24h)