M4.3 Earthquake in the Bonin Islands, Japan region — August 27, 2022
2022-08-27 17:39:43 UTC (2022-08-27) · approx. 3:39 AM UTC+10 local
On August 27, 2022 at 17:39 UTC, a magnitude 4.3 shallow crustal earthquake struck in the Bonin Islands, Japan region, at a depth of 18.8 km and coordinates 27.2308°, 142.9475°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
142.9475°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake in the Bonin Islands, Japan region?
The magnitude 4.3 earthquake that struck in the Bonin Islands, Japan region on August 27, 2022 at 17:39 UTC had a depth of 18.8 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000i4pw). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, August 27, 2022). M4.3 Earthquake in the Bonin Islands, Japan region — August 27, 2022. Retrieved November 6, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000i4pw/