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M1.3 Depth: 85.7 km

M1.3 Earthquake near 27 km WNW of Petersville, Alaska (United States)

UTC time: 2025-08-20 19:20:00 UTC Local time: —

About this earthquake

On August 20, 2025 at 19:20 UTC, a magnitude M1.3 earthquake occurred near 27 km WNW of Petersville, Alaska (United States). At around 86 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: 203 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

Magnitude
M1.3
Depth
85.7 km
UTC time
2025-08-20 19:20:00 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
62.61660, -151.24030
Temperature
14.6°C

Map

Depth profile

Depth profile Depth: 85.7 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 85.7 km
Intermediate
85.7 km
85.7 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

  • Hayes
    Distance: 124 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 156 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Buzzard Creek
    Distance: 213 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Redoubt
    Distance: 250 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 304 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Wrangell
    Distance: 379 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·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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