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M1.0 Depth: 120.6 km

M1.0 Earthquake near 71 km WNW of Happy Valley, Alaska (United States)

UTC time: 2025-08-09 23:44:24 UTC Local time: —

About this earthquake

A magnitude M1.0 earthquake was recorded near 71 km WNW of Happy Valley, Alaska (United States) on August 9, 2025 at 23:44 UTC. At around 121 km, the focal depth places this among intermediate-depth events. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 173 earthquakes were recorded in the past 24 hours, the strongest reaching M4.1.

Details

Magnitude
M1.0
Depth
120.6 km
UTC time
2025-08-09 23:44:24 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
60.13490, -152.96120
Temperature
6.4°C

Map

Depth profile

Depth profile Depth: 120.6 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 120.6 km
Intermediate
120.6 km
120.6 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: 41 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Augustine
    Distance: 90 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Spurr
    Distance: 135 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Douglas
    Distance: 146 km ·Stratovolcano ·Elevation: 2'140 m ·United States
  • Fourpeaked
    Distance: 157 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.

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