M3.2 Earthquake 144 km ESE of Attu Station, Alaska — June 21, 2024
2024-06-21 18:59:21 UTC (2024-06-21) · approx. 6:59 AM UTC+12 local
On June 21, 2024 at 18:59 UTC, a magnitude 3.2 shallow crustal earthquake struck 144 km ESE of Attu Station, Alaska, at a depth of 66.5 km and coordinates 52.2109°, 175.0418°.
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
175.0418°E
Technical Information
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Common Questions
How strong was the magnitude 3.2 earthquake near Attu Station, Alaska?
The magnitude 3.2 earthquake that struck 144 km ESE of Attu Station, Alaska on June 21, 2024 at 18:59 UTC had a depth of 66.5 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: us6000ngzt). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, June 21, 2024). M3.2 Earthquake 144 km ESE of Attu Station, Alaska — June 21, 2024. Retrieved August 30, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000ngzt/