M4.5 Earthquake 293 km NNE of Saipan, Northern Mariana Islands — January 21, 2022
2022-01-21 21:33:34 UTC (2022-01-21) · approx. 7:33 AM UTC+10 local
On January 21, 2022 at 21:33 UTC, a magnitude 4.5 shallow crustal earthquake struck 293 km NNE of Saipan, Northern Mariana Islands, at a depth of 35.7 km and coordinates 17.5460°, 147.0514°.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
147.0514°E
Technical Information
Common Questions
How strong was the magnitude 4.5 earthquake near Saipan, Northern Mariana Islands?
The magnitude 4.5 earthquake that struck 293 km NNE of Saipan, Northern Mariana Islands on January 21, 2022 at 21:33 UTC had a depth of 35.7 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 17.5460°, 147.0514°, which is 293 km NNE of Saipan, Northern Mariana Islands.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000gfwi). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, January 21, 2022). M4.5 Earthquake 293 km NNE of Saipan, Northern Mariana Islands — January 21, 2022. Retrieved April 1, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000gfwi/