M4.1 Earthquake 261 km N of Saipan, Northern Mariana Islands — January 4, 2022
2022-01-04 16:28:59 UTC (2022-01-04) · approx. 2:28 AM UTC+10 local
On January 4, 2022 at 16:28 UTC, a magnitude 4.1 deep-focus earthquake struck 261 km N of Saipan, Northern Mariana Islands, at a depth of 511.6 km and coordinates 17.5731°, 145.5997°.
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
145.5997°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.1 earthquake near Saipan, Northern Mariana Islands?
The magnitude 4.1 earthquake that struck 261 km N of Saipan, Northern Mariana Islands on January 4, 2022 at 16:28 UTC had a depth of 511.6 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: us7000gbp2). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, January 4, 2022). M4.1 Earthquake 261 km N of Saipan, Northern Mariana Islands — January 4, 2022. Retrieved March 12, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000gbp2/