M3.9 Earthquake 151 km SW of Nikolski, Alaska — March 9, 2024
2024-03-09 18:56:16 UTC (2024-03-09) · approx. 7:56 AM UTC-11 local
On March 9, 2024 at 18:56 UTC, a magnitude 3.9 shallow crustal earthquake struck 151 km SW of Nikolski, Alaska, at a depth of 37.3 km and coordinates 51.9834°, -170.4444°.
Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 11 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 296 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-170.4444°E
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Common Questions
How strong was the magnitude 3.9 earthquake near Nikolski, Alaska?
The magnitude 3.9 earthquake that struck 151 km SW of Nikolski, Alaska on March 9, 2024 at 18:56 UTC had a depth of 37.3 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 3.9 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.9 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000mj19). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, March 9, 2024). M3.9 Earthquake 151 km SW of Nikolski, Alaska — March 9, 2024. Retrieved May 15, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000mj19/