M3.4 Earthquake 74 km SSE of Atka, Alaska — June 1, 2026
2026-06-01 23:45:40 UTC (7 hours ago) · approx. 11:45 AM UTC-12 local
On June 1, 2026 at 23:45 UTC, a magnitude 3.4 shallow crustal earthquake struck 74 km SSE of Atka, Alaska, at a depth of 20.0 km and coordinates 51.6210°, -173.6470°.
Physical scale: An earthquake of magnitude 3.4 releases seismic energy equivalent to roughly 1.9 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 134 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-173.6470°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.4 earthquake near Atka, Alaska?
The magnitude 3.4 earthquake that struck 74 km SSE of Atka, Alaska on June 1, 2026 at 23:45 UTC had a depth of 20.0 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.4 earthquakes can continue for several days and gradually diminish over time.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Actions
Understanding This Data
Magnitude 3.4 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: aka2026kuswcg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, June 1, 2026). M3.4 Earthquake 74 km SSE of Atka, Alaska — June 1, 2026. Retrieved June 2, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026kuswcg/