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M4.0 Depth: 31.2 km

M4.0 Earthquake near SOUTHERN ALASKA (United States)

UTC time: 2025-10-15 03:30:44 UTC Local time: —

About this earthquake

A magnitude M4.0 earthquake was recorded near SOUTHERN ALASKA (United States) on October 15, 2025 at 03:30 UTC. With a focal depth of about 31 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 EMSC and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 206 earthquakes, the strongest at M5.5.

Details

Magnitude
M4.0
Depth
31.2 km
UTC time
2025-10-15 03:30:44 UTC
Local time
—
Country
United States
City
Alaska
Source
emsc
Coordinates
61.75940, -147.51840
Temperature
-2.2°C

Map

Depth profile

Depth profile Depth: 31.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 31.2 km
Shallow
31.2 km
31.2 km — deeper than the regional average (15.4 km)
Regional average: 15.4 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

  • Wrangell
    Distance: 186 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Spurr
    Distance: 256 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Hayes
    Distance: 258 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Buzzard Creek
    Distance: 260 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Churchill
    Distance: 308 km ·Stratovolcano ·Elevation: 5'005 m ·Last eruption: 847 ·United States
  • Redoubt
    Distance: 314 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·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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