M4.2 Earthquake 23 km S of Takedamachi, Japan — July 28, 2020
2020-07-28 20:16:24 UTC (2020-07-28) · approx. 5:16 AM UTC+9 local
On July 28, 2020 at 20:16 UTC, a magnitude 4.2 intermediate depth earthquake struck 23 km S of Takedamachi, Japan, at a depth of 101.4 km and coordinates 32.7588°, 131.3859°.
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
131.3859°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Takedamachi, Japan?
The magnitude 4.2 earthquake that struck 23 km S of Takedamachi, Japan on July 28, 2020 at 20:16 UTC had a depth of 101.4 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.
Actions
Location
Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000b8sg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 28, 2020). M4.2 Earthquake 23 km S of Takedamachi, Japan — July 28, 2020. Retrieved October 3, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000b8sg/