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M1.6 Depth: 87.3 km

M1.6 Earthquake near 54 km NNE of Petersville, Alaska (United States)

UTC time: 2025-10-21 20:39:35 UTC Local time: —

About this earthquake

On October 21, 2025 at 20:39 UTC, a magnitude M1.6 earthquake occurred near 54 km NNE of Petersville, Alaska (United States). The earthquake originated at an intermediate depth of about 87 km. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: 189 earthquakes were recorded in the past 24 hours, the strongest reaching M4.7.

Details

Magnitude
M1.6
Depth
87.3 km
UTC time
2025-10-21 20:39:35 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
62.95880, -150.44000
Temperature
-6.3°C

Map

Depth profile

Depth profile Depth: 87.3 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 87.3 km
Intermediate
87.3 km
87.3 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

  • Buzzard Creek
    Distance: 158 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Hayes
    Distance: 179 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 207 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Redoubt
    Distance: 301 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Wrangell
    Distance: 346 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Iliamna
    Distance: 354 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·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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