M0.9 Depth: 12.5 km

M0.9 Earthquake near 51 km ENE of Port Alsworth, Alaska (United States)

UTC time: 2025-12-05 19:55:45 UTC Local time: —

About this earthquake

On December 5, 2025 at 19:55 UTC, a magnitude M0.9 earthquake occurred near 51 km ENE of Port Alsworth, Alaska (United States). With a focal depth of about 13 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: 240 earthquakes were recorded in the past 24 hours, the strongest reaching M5.0.

Details

Magnitude

M0.9

Depth

12.5 km

UTC time

2025-12-05 19:55:45 UTC

Local time

—

Country

United States

City

Alaska

Source

usgs

Coordinates

60.32583, -153.41522

Temperature

-9.9°C

Map

Depth profile

Shallow

12.5 km

12.5 km — close to the regional average (15.6 km)

Regional average: 15.6 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

Iliamna

Distance: 37 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
Redoubt

Distance: 41 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
Augustine

Distance: 107 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
Spurr

Distance: 125 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
Hayes

Distance: 156 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
Douglas

Distance: 164 km ·Stratovolcano ·Elevation: 2'140 m ·United States

Historic earthquake map · United States

Open history map

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Country statistics · United States

Country overview

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

Stats (last 24h)

Global (24h)

678

Country (24h)