M4.1 Earthquake in the Fiji region — January 21, 2022
2022-01-21 19:06:27 UTC (2022-01-21) · approx. 7:06 AM UTC-12 local
On January 21, 2022 at 19:06 UTC, a magnitude 4.1 deep-focus earthquake struck in the Fiji region, at a depth of 621.6 km and coordinates -21.8498°, -178.8494°.
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
-178.8494°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake in the Fiji region?
The magnitude 4.1 earthquake that struck in the Fiji region on January 21, 2022 at 19:06 UTC had a depth of 621.6 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: us7000gfwh). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, January 21, 2022). M4.1 Earthquake in the Fiji region — January 21, 2022. Retrieved April 1, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000gfwh/