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M-0.4 Depth: 1.0 km

M-0.4 Earthquake near 66 km ENE of Pedro Bay, Alaska (United States)

UTC time: 2025-08-15 23:15:52 UTC Local time: —

About this earthquake

On August 15, 2025 at 23:15 UTC, a magnitude M-0.4 earthquake occurred near 66 km ENE of Pedro Bay, Alaska (United States). With a focal depth of about 1 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 221 earthquakes, the strongest at M3.9.

Details

Magnitude
M-0.4
Depth
1.0 km
UTC time
2025-08-15 23:15:52 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
60.05100, -153.04283
Temperature
4.6°C

Map

Depth profile

Depth profile Depth: 1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 1 km
Shallow
1 km
1 km — shallower 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

  • Iliamna
    Distance: 3 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Redoubt
    Distance: 51 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Augustine
    Distance: 80 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Douglas
    Distance: 136 km ·Stratovolcano ·Elevation: 2'140 m ·United States
  • Spurr
    Distance: 145 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Fourpeaked
    Distance: 147 km ·Stratovolcano ·Elevation: 2'105 m ·Last eruption: 2006 ·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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