M1.3 Depth: 6.6 km

M1.3 Earthquake near 78 km WNW of Tyonek, Alaska (United States)

UTC time: 2025-07-21 16:21:28 UTC Local time: —

About this earthquake

A magnitude M1.3 earthquake was recorded near 78 km WNW of Tyonek, Alaska (United States) on July 21, 2025 at 16:21 UTC. The hypocenter lay relatively close to the surface at around 7 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 207 earthquakes were recorded in the past 24 hours, the strongest reaching M3.2.

Details

Magnitude

M1.3

Depth

6.6 km

UTC time

2025-07-21 16:21:28 UTC

Local time

—

Country

United States

City

Alaska

Source

usgs

Coordinates

61.30340, -152.51130

Temperature

4.0°C

Map

Depth profile

Shallow

6.6 km

6.6 km — shallower than the regional average (15.3 km)

Regional average: 15.3 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

Spurr

Distance: 14 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
Hayes

Distance: 38 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
Redoubt

Distance: 92 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
Iliamna

Distance: 145 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
Augustine

Distance: 222 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
Douglas

Distance: 278 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)

591

Country (24h)