M4.0 Earthquake 73 km WSW of Attu Station, Alaska — June 28, 2024
2024-06-28 19:20:47 UTC (2024-06-28) · approx. 6:20 AM UTC+11 local
On June 28, 2024 at 19:20 UTC, a magnitude 4.0 shallow crustal earthquake struck 73 km WSW of Attu Station, Alaska, at a depth of 23.0 km and coordinates 52.7030°, 172.1214°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
172.1214°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Attu Station, Alaska?
The magnitude 4.0 earthquake that struck 73 km WSW of Attu Station, Alaska on June 28, 2024 at 19:20 UTC had a depth of 23.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000mx8c). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, June 28, 2024). M4.0 Earthquake 73 km WSW of Attu Station, Alaska — June 28, 2024. Retrieved September 4, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000mx8c/