M4.0 Earthquake 58 km NE of Hualien City, Taiwan — February 7, 2021
2021-02-07 22:16:55 UTC (2021-02-07) · approx. 6:16 AM UTC+8 local
On February 7, 2021 at 22:16 UTC, a magnitude 4.0 shallow crustal earthquake struck 58 km NE of Hualien City, Taiwan, at a depth of 35.1 km and coordinates 24.2987°, 122.0593°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
122.0593°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Hualien City, Taiwan?
The magnitude 4.0 earthquake that struck 58 km NE of Hualien City, Taiwan on February 7, 2021 at 22:16 UTC had a depth of 35.1 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000dh2d). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, February 7, 2021). M4.0 Earthquake 58 km NE of Hualien City, Taiwan — February 7, 2021. Retrieved April 22, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000dh2d/