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M1.0 Depth: 66.1 km

M1.0 Earthquake near 48 km S of Skwentna, Alaska (United States)

UTC time: 2025-09-08 20:07:42 UTC Local time: —

About this earthquake

A magnitude M1.0 earthquake was recorded near 48 km S of Skwentna, Alaska (United States) on September 8, 2025 at 20:07 UTC. The hypocenter lay relatively close to the surface at around 66 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 201 earthquakes, the strongest at M4.8.

Details

Magnitude
M1.0
Depth
66.1 km
UTC time
2025-09-08 20:07:42 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
61.56030, -151.51920
Temperature
9.9°C

Map

Depth profile

Depth profile Depth: 66.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 66.1 km
Shallow
66.1 km
66.1 km — deeper 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

  • Hayes
    Distance: 48 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 49 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Redoubt
    Distance: 137 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 190 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Augustine
    Distance: 266 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Buzzard Creek
    Distance: 319 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States

Historic earthquake map · United States

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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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