M4.4 Earthquake 89 km SSW of Hengchun, Taiwan — April 18, 2025
2025-04-18 19:51:18 UTC (2025-04-18) · approx. 3:51 AM UTC+8 local
On April 18, 2025 at 19:51 UTC, a magnitude 4.4 shallow crustal earthquake struck 89 km SSW of Hengchun, Taiwan, at a depth of 10.0 km and coordinates 21.3200°, 120.2826°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
120.2826°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.4 earthquake near Hengchun, Taiwan?
The magnitude 4.4 earthquake that struck 89 km SSW of Hengchun, Taiwan on April 18, 2025 at 19:51 UTC had a depth of 10.0 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 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000q731). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, April 18, 2025). M4.4 Earthquake 89 km SSW of Hengchun, Taiwan — April 18, 2025. Retrieved June 27, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000q731/