Back to map
M2.1 Depth: 172.7 km

M2.1 Earthquake near 40 km NE of Pedro Bay, Alaska (United States)

UTC time: 2025-09-01 09:42:02 UTC Local time: —

About this earthquake

A magnitude M2.1 earthquake was recorded near 40 km NE of Pedro Bay, Alaska (United States) on September 1, 2025 at 09:42 UTC. The earthquake originated at an intermediate depth of about 173 km. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 239 earthquakes were recorded in the past 24 hours, the strongest reaching M3.5.

Details

Magnitude
M2.1
Depth
172.7 km
UTC time
2025-09-01 09:42:02 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
60.04890, -153.59880
Temperature
7.8°C

Map

Depth profile

Depth profile Depth: 172.7 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 172.7 km
Intermediate
172.7 km
172.7 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

  • Iliamna
    Distance: 28 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Redoubt
    Distance: 68 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Augustine
    Distance: 77 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Douglas
    Distance: 133 km ·Stratovolcano ·Elevation: 2'140 m ·United States
  • Fourpeaked
    Distance: 142 km ·Stratovolcano ·Elevation: 2'105 m ·Last eruption: 2006 ·United States
  • Spurr
    Distance: 157 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.

Share