M3.2 Earthquake 123 km SSW of Atka, Alaska — June 19, 2023
2023-06-19 21:47:21 UTC (2023-06-19) · approx. 9:47 AM UTC-12 local
On June 19, 2023 at 21:47 UTC, a magnitude 3.2 shallow crustal earthquake struck 123 km SSW of Atka, Alaska, at a depth of 10.0 km and coordinates 51.1990°, -174.9695°.
Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 951 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 97 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-174.9695°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Atka, Alaska?
The magnitude 3.2 earthquake that struck 123 km SSW of Atka, Alaska on June 19, 2023 at 21:47 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 3.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.2 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000ka83). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, June 19, 2023). M3.2 Earthquake 123 km SSW of Atka, Alaska — June 19, 2023. Retrieved August 26, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000ka83/