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M1.6 Depth: 25.2 km

M1.6 Earthquake near 40 km NNW of Petersville, Alaska (United States)

UTC time: 2025-08-31 07:00:31 UTC Local time: —

About this earthquake

On August 31, 2025 at 07:00 UTC, a magnitude M1.6 earthquake occurred near 40 km NNW of Petersville, Alaska (United States). The hypocenter lay relatively close to the surface at around 25 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 244 earthquakes were recorded in the past 24 hours, the strongest reaching M3.9.

Details

Magnitude
M1.6
Depth
25.2 km
UTC time
2025-08-31 07:00:31 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
62.85260, -150.93040
Temperature
-1.8°C

Map

Depth profile

Depth profile Depth: 25.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 25.2 km
Shallow
25.2 km
25.2 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: 155 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Buzzard Creek
    Distance: 183 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Spurr
    Distance: 186 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Redoubt
    Distance: 280 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 334 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Wrangell
    Distance: 368 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·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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