Magnitude
M3.9
- Depth
- 35.0 km
- Source
- USGS
158 km WSW of Adak, Alaska
M3.9 Earthquake near 158 km WSW of Adak, Alaska
Map
About this earthquake
A magnitude M3.9 earthquake was recorded near 158 km WSW of Adak, Alaska on April 20, 2025 at 23:28 UTC. With a focal depth of about 35 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude are often felt but rarely cause damage.
The event was recorded by USGS.
Details
ID
b4d4c9e7756d549d5a64b5675a8211b5039f4859
Magnitude
M3.9
Depth
35.0 km
UTC time
2025-04-20 23:28:33 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.17210,
-178.62790
Depth profile
Shallow
35 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
No unambiguous area assignment
Context for this earthquake
This event has no unambiguous country assignment in the analysed catalogue. It is therefore not assigned to a regional profile.
Earthquake overviewStats (last 24h)
Global (24h)
650
Country (24h)
—
—
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