M4.2 Earthquake 68 km ESE of Jiufen, Taiwan — May 31, 2021
2021-05-31 17:53:57 UTC (2021-05-31) · approx. 1:53 AM UTC+8 local
On May 31, 2021 at 17:53 UTC, a magnitude 4.2 shallow crustal earthquake struck 68 km ESE of Jiufen, Taiwan, at a depth of 14.5 km and coordinates 24.8414°, 122.4545°.
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
122.4545°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Jiufen, Taiwan?
The magnitude 4.2 earthquake that struck 68 km ESE of Jiufen, Taiwan on May 31, 2021 at 17:53 UTC had a depth of 14.5 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 4.2 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: us6000egde). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, May 31, 2021). M4.2 Earthquake 68 km ESE of Jiufen, Taiwan — May 31, 2021. Retrieved August 7, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000egde/