M4.2 Earthquake 123 km ESE of Kitaibaraki, Japan — April 7, 2024
2024-04-07 17:08:33 UTC (2024-04-07) · approx. 2:08 AM UTC+9 local
On April 7, 2024 at 17:08 UTC, a magnitude 4.2 shallow crustal earthquake struck 123 km ESE of Kitaibaraki, Japan, at a depth of 30.6 km and coordinates 36.4186°, 142.0465°.
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
142.0465°E
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Common Questions
How strong was the magnitude 4.2 earthquake near Kitaibaraki, Japan?
The magnitude 4.2 earthquake that struck 123 km ESE of Kitaibaraki, Japan on April 7, 2024 at 17:08 UTC had a depth of 30.6 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: us7000man0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, April 7, 2024). M4.2 Earthquake 123 km ESE of Kitaibaraki, Japan — April 7, 2024. Retrieved June 12, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000man0/