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M1.8 Depth: 73.5 km

M1.8 Earthquake near 66 km WNW of Karluk, Alaska (United States)

UTC time: 2025-08-09 13:36:19 UTC Local time: —

About this earthquake

A magnitude M1.8 earthquake was recorded near 66 km WNW of Karluk, Alaska (United States) on August 9, 2025 at 13:36 UTC. At around 74 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: 162 earthquakes were recorded in the past 24 hours, the strongest reaching M4.1.

Details

Magnitude
M1.8
Depth
73.5 km
UTC time
2025-08-09 13:36:19 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
57.87560, -155.40350
Temperature
10.2°C

Map

Depth profile

Depth profile Depth: 73.5 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 73.5 km
Intermediate
73.5 km
73.5 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

  • Alaska Peninsula Arc at 155.4°W
    Distance: 1 km ·Lava dome ·Elevation: 402 m ·United States
  • Martin
    Distance: 33 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
  • Mageik
    Distance: 37 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
  • Trident
    Distance: 44 km ·Stratovolcano ·Elevation: 1'864 m ·Last eruption: 1974 ·United States
  • Novarupta
    Distance: 46 km ·Caldera ·Elevation: 841 m ·Last eruption: 1912 ·United States
  • Katmai
    Distance: 52 km ·Stratovolcano ·Elevation: 2'047 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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