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M4.0 Depth: 55.0 km

M4.0 Earthquake near 34 km ESE of Nikolski, Alaska (United States)

UTC time: 2025-11-05 21:05:13 UTC Local time: —

About this earthquake

On November 5, 2025 at 21:05 UTC, a magnitude M4.0 earthquake occurred near 34 km ESE of Nikolski, Alaska (United States). With a focal depth of about 55 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Tremors of this size are distinctly felt and can occasionally cause light damage.

The data is provided by USGS and cross-checked across seismological networks. United States: 141 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Details

Magnitude
M4.0
Depth
55.0 km
UTC time
2025-11-05 21:05:13 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
52.85650, -168.36500
Temperature
0.8°C

Map

Depth profile

Depth profile Depth: 55 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 55 km
Shallow
55 km
55 km — deeper than the regional average (15.5 km)
Regional average: 15.5 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Volcanoes nearby

  • Recheschnoi
    Distance: 35 km ·Stratovolcano ·Elevation: 1'984 m ·United States
  • Vsevidof
    Distance: 37 km ·Stratovolcano ·Elevation: 2'160 m ·Last eruption: 1878 ·United States
  • Okmok
    Distance: 66 km ·Shield ·Elevation: 1'073 m ·Last eruption: 2008 ·United States
  • Kagamil
    Distance: 92 km ·Stratovolcano ·Elevation: 893 m ·Last eruption: 1929 ·United States
  • Tana
    Distance: 94 km ·Stratovolcano(es) ·Elevation: 1'170 m ·United States
  • Uliaga
    Distance: 97 km ·Stratovolcano ·Elevation: 888 m ·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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