M3.9 Earthquake 86 km SSE of Hualien City, Taiwan — March 23, 2025
2025-03-23 18:38:42 UTC (2025-03-23) · approx. 2:38 AM UTC+8 local
On March 23, 2025 at 18:38 UTC, a magnitude 3.9 shallow crustal earthquake struck 86 km SSE of Hualien City, Taiwan, at a depth of 31.8 km and coordinates 23.2975°, 122.0137°.
Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 11 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 296 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
122.0137°E
Technical Information
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Common Questions
How strong was the magnitude 3.9 earthquake near Hualien City, Taiwan?
The magnitude 3.9 earthquake that struck 86 km SSE of Hualien City, Taiwan on March 23, 2025 at 18:38 UTC had a depth of 31.8 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.9 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.9 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000pm3d). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, March 23, 2025). M3.9 Earthquake 86 km SSE of Hualien City, Taiwan — March 23, 2025. Retrieved May 29, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pm3d/