M3.0 Earthquake 58 km WNW of Ninilchik, Alaska — June 28, 2025
2025-06-28 22:18:22 UTC (2025-06-28) · approx. 12:18 PM UTC-10 local
On June 28, 2025 at 22:18 UTC, a magnitude 3.0 intermediate depth earthquake struck 58 km WNW of Ninilchik, Alaska, at a depth of 96.0 km and coordinates 60.3004°, -152.5893°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-152.5893°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Ninilchik, Alaska?
The magnitude 3.0 earthquake that struck 58 km WNW of Ninilchik, Alaska on June 28, 2025 at 22:18 UTC had a depth of 96.0 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 3.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak02588eek99). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, June 28, 2025). M3.0 Earthquake 58 km WNW of Ninilchik, Alaska — June 28, 2025. Retrieved September 4, 2025 from https://www.earthquaketracker.org/earthquakes/event/ak02588eek99/