M4.0 Earthquake 75 km SSE of Nikolski, Alaska — April 12, 2024
2024-04-12 18:30:08 UTC (2024-04-12) · approx. 7:30 AM UTC-11 local
On April 12, 2024 at 18:30 UTC, a magnitude 4.0 shallow crustal earthquake struck 75 km SSE of Nikolski, Alaska, at a depth of 33.3 km and coordinates 52.3641°, -168.2678°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-168.2678°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Nikolski, Alaska?
The magnitude 4.0 earthquake that struck 75 km SSE of Nikolski, Alaska on April 12, 2024 at 18:30 UTC had a depth of 33.3 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000md6s). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, April 12, 2024). M4.0 Earthquake 75 km SSE of Nikolski, Alaska — April 12, 2024. Retrieved June 17, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000md6s/