A magnitude M5.9 earthquake was recorded near 84 km SSE of Adak, Alaska on March 21, 2025 at 14:58 UTC. With a focal depth of about 30 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude can damage poorly built structures.
The event was recorded by USGS.
Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.
Depth classes per USGS
Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.
3 sources currently report magnitudes from M5.9 to M6.2.
Measurements can differ because agencies use different networks and calculation methods. Values may be revised.
Comparison with recorded earthquakes before this event within 150 km.
The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.
