M4.4 Earthquake 49 km SE of Kushima, Japan — June 18, 2023
2023-06-18 20:37:01 UTC (2023-06-18) · approx. 5:37 AM UTC+9 local
On June 18, 2023 at 20:37 UTC, a magnitude 4.4 shallow crustal earthquake struck 49 km SE of Kushima, Japan, at a depth of 45.0 km and coordinates 31.1250°, 131.5510°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
131.5510°E
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Common Questions
How strong was the magnitude 4.4 earthquake near Kushima, Japan?
The magnitude 4.4 earthquake that struck 49 km SE of Kushima, Japan on June 18, 2023 at 20:37 UTC had a depth of 45.0 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 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000k9f3). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, June 18, 2023). M4.4 Earthquake 49 km SE of Kushima, Japan — June 18, 2023. Retrieved August 26, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000k9f3/