M4.2 Earthquake 13 km S of Chigasaki, Japan — August 5, 2024
2024-08-05 14:48:37 UTC (2024-08-05) · approx. 11:48 PM UTC+9 local
On August 5, 2024 at 14:48 UTC, a magnitude 4.2 intermediate depth earthquake struck 13 km S of Chigasaki, Japan, at a depth of 153.3 km and coordinates 35.2187°, 139.4013°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
139.4013°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Chigasaki, Japan?
The magnitude 4.2 earthquake that struck 13 km S of Chigasaki, Japan on August 5, 2024 at 14:48 UTC had a depth of 153.3 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000n90j). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, August 5, 2024). M4.2 Earthquake 13 km S of Chigasaki, Japan — August 5, 2024. Retrieved October 24, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000n90j/