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M0.4 Depth: 8.4 km

M0.4 Earthquake near 146 km W of Adak, Alaska (United States)

UTC time: 2025-07-30 18:59:48 UTC Local time: —

About this earthquake

A magnitude M0.4 earthquake was recorded near 146 km W of Adak, Alaska (United States) on July 30, 2025 at 18:59 UTC. With a focal depth of about 8 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The data is provided by USGS and cross-checked across seismological networks. United States: 154 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Details

Magnitude
M0.4
Depth
8.4 km
UTC time
2025-07-30 18:59:48 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
51.80550, -178.76217
Temperature
10.8°C

Map

Depth profile

Depth profile Depth: 8.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8.4 km
Shallow
8.4 km
8.4 km — shallower than the regional average (15.9 km)
Regional average: 15.9 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

  • Gareloi
    Distance: 3 km ·Stratovolcano ·Elevation: 1'573 m ·Last eruption: 1989 ·United States
  • Tanaga
    Distance: 43 km ·Stratovolcano(es) ·Elevation: 1'806 m ·Last eruption: 1914 ·United States
  • Takawangha
    Distance: 52 km ·Stratovolcano ·Elevation: 1'449 m ·Last eruption: 1550 ·United States
  • Bobrof
    Distance: 92 km ·Stratovolcano ·Elevation: 738 m ·United States
  • Kanaga
    Distance: 110 km ·Stratovolcano ·Elevation: 1'307 m ·Last eruption: 2023 ·United States
  • Moffett
    Distance: 139 km ·Stratovolcano ·Elevation: 1'196 m ·Last eruption: -1600 ·United States

Historic earthquake map · United States

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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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