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M4.1 Depth: 12.5 km

M4.1 Earthquake near 13 km NNW of Four Mile Road, Alaska (United States)

UTC time: 2025-08-20 20:35:27 UTC Local time: —

About this earthquake

A magnitude M4.1 earthquake was recorded near 13 km NNW of Four Mile Road, Alaska (United States) on August 20, 2025 at 20:35 UTC. With a focal depth of about 13 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Tremors of this size are distinctly felt and can occasionally cause light damage.

The event was recorded by USGS. United States: 203 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

Magnitude
M4.1
Depth
12.5 km
UTC time
2025-08-20 20:35:27 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
64.71270, -149.23750
Temperature
16.0°C

Map

Depth profile

Depth profile Depth: 12.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 12.5 km
Shallow
12.5 km
12.5 km — close to 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

  • Buzzard Creek
    Distance: 82 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Hayes
    Distance: 377 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Wrangell
    Distance: 398 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Spurr
    Distance: 409 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·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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