M3.5 Earthquake 219 km W of Adak, Alaska — August 28, 2022
2022-08-28 21:51:10 UTC (2022-08-28) · approx. 9:51 AM UTC-12 local
On August 28, 2022 at 21:51 UTC, a magnitude 3.5 intermediate depth earthquake struck 219 km W of Adak, Alaska, at a depth of 196.0 km and coordinates 51.9113°, -179.8238°.
Physical scale: An earthquake of magnitude 3.5 releases seismic energy equivalent to roughly 2.7 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 157 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-179.8238°E
Technical Information
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Common Questions
How strong was the magnitude 3.5 earthquake near Adak, Alaska?
The magnitude 3.5 earthquake that struck 219 km W of Adak, Alaska on August 28, 2022 at 21:51 UTC had a depth of 196.0 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 3.5 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.5 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000ir9r). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, August 28, 2022). M3.5 Earthquake 219 km W of Adak, Alaska — August 28, 2022. Retrieved November 6, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000ir9r/