M4.2 Earthquake 46 km SSW of Hualien City, Taiwan — September 13, 2026
2026-09-13 19:21:35 UTC (1 hour ago) · approx. 3:21 AM UTC+8 local
On September 13, 2026 at 19:21 UTC, a magnitude 4.2 shallow crustal earthquake struck 46 km SSW of Hualien City, Taiwan, at a depth of 12.2 km and coordinates 23.5992°, 121.4016°.
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
121.4016°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Hualien City, Taiwan?
The magnitude 4.2 earthquake that struck 46 km SSW of Hualien City, Taiwan on September 13, 2026 at 19:21 UTC had a depth of 12.2 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 4.2 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: us7000th7w). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 13, 2026). M4.2 Earthquake 46 km SSW of Hualien City, Taiwan — September 13, 2026. Retrieved September 13, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000th7w/