M4.7 Earthquake south of the Mariana Islands — February 20, 2022
2022-02-20 19:21:50 UTC (2022-02-20) · approx. 5:21 AM UTC+10 local
On February 20, 2022 at 19:21 UTC, a magnitude 4.7 shallow crustal earthquake struck south of the Mariana Islands, at a depth of 10.0 km and coordinates 11.7173°, 144.5134°.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
144.5134°E
Technical Information
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Common Questions
How strong was the magnitude 4.7 earthquake south of the Mariana Islands?
The magnitude 4.7 earthquake that struck south of the Mariana Islands on February 20, 2022 at 19:21 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 11.7173°, 144.5134°, which is south of the Mariana Islands.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us6000gztd). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, February 20, 2022). M4.7 Earthquake south of the Mariana Islands — February 20, 2022. Retrieved May 4, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000gztd/