M1.7 Depth: 111.6 km

M1.7 Earthquake near 66 km WNW of Happy Valley, Alaska (United States)

UTC time: 2025-09-21 03:13:57 UTC Local time: —

About this earthquake

A magnitude M1.7 earthquake was recorded near 66 km WNW of Happy Valley, Alaska (United States) on September 21, 2025 at 03:13 UTC. The earthquake originated at an intermediate depth of about 112 km. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 167 earthquakes, the strongest at M3.7.

Details

Magnitude

M1.7

Depth

111.6 km

UTC time

2025-09-21 03:13:57 UTC

Local time

—

Country

United States

City

Alaska

Source

usgs

Coordinates

60.10110, -152.89170

Temperature

3.4°C

Map

Depth profile

Intermediate

111.6 km

111.6 km — deeper than the regional average (15.4 km)

Regional average: 15.4 km

Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Volcanoes nearby

Iliamna

Distance: 13 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
Redoubt

Distance: 43 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
Augustine

Distance: 88 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
Spurr

Distance: 138 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
Douglas

Distance: 143 km ·Stratovolcano ·Elevation: 2'140 m ·United States
Fourpeaked

Distance: 154 km ·Stratovolcano ·Elevation: 2'105 m ·Last eruption: 2006 ·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)

1051

Country (24h)