M4.3 Earthquake in the Izu Islands, Japan region — May 2, 2021
2021-05-02 18:28:50 UTC (2021-05-02) · approx. 3:28 AM UTC+9 local
On May 2, 2021 at 18:28 UTC, a magnitude 4.3 shallow crustal earthquake struck in the Izu Islands, Japan region, at a depth of 64.2 km and coordinates 29.5340°, 141.0495°.
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
141.0495°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake in the Izu Islands, Japan region?
The magnitude 4.3 earthquake that struck in the Izu Islands, Japan region on May 2, 2021 at 18:28 UTC had a depth of 64.2 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: us7000e12e). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, May 2, 2021). M4.3 Earthquake in the Izu Islands, Japan region — May 2, 2021. Retrieved July 10, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000e12e/