M4.2 Earthquake 120 km WNW of Mujiayingzi, China — March 19, 2023
2023-03-19 22:03:42 UTC (2023-03-19) · approx. 6:03 AM UTC+8 local
On March 19, 2023 at 22:03 UTC, a magnitude 4.2 shallow crustal earthquake struck 120 km WNW of Mujiayingzi, China, at a depth of 10.0 km and coordinates 42.6320°, 117.4984°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
117.4984°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Mujiayingzi, China?
The magnitude 4.2 earthquake that struck 120 km WNW of Mujiayingzi, China on March 19, 2023 at 22:03 UTC had a depth of 10.0 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 4.2 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000jmfj). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, March 19, 2023). M4.2 Earthquake 120 km WNW of Mujiayingzi, China — March 19, 2023. Retrieved May 26, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000jmfj/