M3.0 Earthquake 100 km WSW of Nikolski, Alaska — June 21, 2023
2023-06-21 20:35:34 UTC (2023-06-21) · approx. 9:35 AM UTC-11 local
On June 21, 2023 at 20:35 UTC, a magnitude 3.0 intermediate depth earthquake struck 100 km WSW of Nikolski, Alaska, at a depth of 106.7 km and coordinates 52.5661°, -170.2183°.
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
-170.2183°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.0 earthquake near Nikolski, Alaska?
The magnitude 3.0 earthquake that struck 100 km WSW of Nikolski, Alaska on June 21, 2023 at 20:35 UTC had a depth of 106.7 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.
Actions
Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000ka7y). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, June 21, 2023). M3.0 Earthquake 100 km WSW of Nikolski, Alaska — June 21, 2023. Retrieved August 26, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000ka7y/