M3.0 Earthquake 133 km SE of Perryville, Alaska — April 24, 2023
2023-04-24 16:33:12 UTC (2023-04-24) · approx. 5:33 AM UTC-11 local
On April 24, 2023 at 16:33 UTC, a magnitude 3.0 shallow crustal earthquake struck 133 km SE of Perryville, Alaska, at a depth of 23.1 km and coordinates 54.9820°, -157.8167°.
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
-157.8167°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Perryville, Alaska?
The magnitude 3.0 earthquake that struck 133 km SE of Perryville, Alaska on April 24, 2023 at 16:33 UTC had a depth of 23.1 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: ak02358szm29). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 24, 2023). M3.0 Earthquake 133 km SE of Perryville, Alaska — April 24, 2023. Retrieved July 11, 2023 from https://www.earthquaketracker.org/earthquakes/event/ak02358szm29/