M3.3 Earthquake 112 km S of McCarthy, Alaska — June 12, 2025
2025-06-12 21:58:53 UTC (2025-06-12) · approx. 11:58 AM UTC-10 local
On June 12, 2025 at 21:58 UTC, a magnitude 3.3 shallow crustal earthquake struck 112 km S of McCarthy, Alaska, at a depth of 10.0 km and coordinates 60.4365°, -143.1948°.
Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.3 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 114 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-143.1948°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.3 earthquake near McCarthy, Alaska?
The magnitude 3.3 earthquake that struck 112 km S of McCarthy, Alaska on June 12, 2025 at 21:58 UTC had a depth of 10.0 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 3.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.3 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak0257hxg7sg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, June 12, 2025). M3.3 Earthquake 112 km S of McCarthy, Alaska — June 12, 2025. Retrieved August 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/ak0257hxg7sg/