M4.5 Earthquake 183 km ENE of Saipan, Northern Mariana Islands — February 21, 2022
2022-02-21 21:42:55 UTC (2022-02-21) · approx. 7:42 AM UTC+10 local
On February 21, 2022 at 21:42 UTC, a magnitude 4.5 shallow crustal earthquake struck 183 km ENE of Saipan, Northern Mariana Islands, at a depth of 10.0 km and coordinates 16.0181°, 147.2493°.
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
147.2493°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.5 earthquake near Saipan, Northern Mariana Islands?
The magnitude 4.5 earthquake that struck 183 km ENE of Saipan, Northern Mariana Islands on February 21, 2022 at 21:42 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 16.0181°, 147.2493°, which is 183 km ENE 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: us6000h021). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, February 21, 2022). M4.5 Earthquake 183 km ENE of Saipan, Northern Mariana Islands — February 21, 2022. Retrieved May 4, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000h021/