M4.1 Earthquake 222 km NE of Gisborne, New Zealand — March 11, 2021
2021-03-11 15:48:54 UTC (2021-03-11) · approx. 3:48 AM UTC+12 local
On March 11, 2021 at 15:48 UTC, a magnitude 4.1 shallow crustal earthquake struck 222 km NE of Gisborne, New Zealand, at a depth of 10.0 km and coordinates -37.2010°, 179.7437°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
179.7437°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Gisborne, New Zealand?
The magnitude 4.1 earthquake that struck 222 km NE of Gisborne, New Zealand on March 11, 2021 at 15:48 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000di5z). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, March 11, 2021). M4.1 Earthquake 222 km NE of Gisborne, New Zealand — March 11, 2021. Retrieved May 21, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000di5z/