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M1.8 Depth: 77.5 km

M1.8 Earthquake near 55 km WNW of Nanwalek, Alaska (United States)

UTC time: 2025-11-23 01:17:42 UTC Local time: —

About this earthquake

A magnitude M1.8 earthquake was recorded near 55 km WNW of Nanwalek, Alaska (United States) on November 23, 2025 at 01:17 UTC. At around 77 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: over the past 24 hours, QuakeMap24 logged 196 earthquakes, the strongest at M3.8.

Details

Magnitude
M1.8
Depth
77.5 km
UTC time
2025-11-23 01:17:42 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
59.53426, -152.83130
Temperature
2.1°C

Map

Depth profile

Depth profile Depth: 77.5 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 77.5 km
Intermediate
77.5 km
77.5 km — deeper than the regional average (15.5 km)
Regional average: 15.5 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

  • Augustine
    Distance: 39 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Iliamna
    Distance: 57 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Douglas
    Distance: 86 km ·Stratovolcano ·Elevation: 2'140 m ·United States
  • Fourpeaked
    Distance: 98 km ·Stratovolcano ·Elevation: 2'105 m ·Last eruption: 2006 ·United States
  • Redoubt
    Distance: 106 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Kaguyak
    Distance: 123 km ·Lava dome(s) ·Elevation: 901 m ·Last eruption: -3850 ·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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