M4.1 Earthquake in the Bonin Islands, Japan region — May 19, 2023
2023-05-19 22:18:05 UTC (2023-05-19) · approx. 7:18 AM UTC+9 local
On May 19, 2023 at 22:18 UTC, a magnitude 4.1 deep-focus earthquake struck in the Bonin Islands, Japan region, at a depth of 499.5 km and coordinates 26.9561°, 140.3382°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
140.3382°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.1 earthquake in the Bonin Islands, Japan region?
The magnitude 4.1 earthquake that struck in the Bonin Islands, Japan region on May 19, 2023 at 22:18 UTC had a depth of 499.5 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 4.1 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000kday). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, May 19, 2023). M4.1 Earthquake in the Bonin Islands, Japan region — May 19, 2023. Retrieved July 24, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kday/