M4.3 Earthquake 287 km SW of Merizo Village, Guam — December 11, 2022
2022-12-11 20:29:48 UTC (2022-12-11) · approx. 6:29 AM UTC+10 local
On December 11, 2022 at 20:29 UTC, a magnitude 4.3 shallow crustal earthquake struck 287 km SW of Merizo Village, Guam, at a depth of 10.0 km and coordinates 11.7042°, 142.5543°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
142.5543°E
Technical Information
Common Questions
How strong was the magnitude 4.3 earthquake near Merizo Village, Guam?
The magnitude 4.3 earthquake that struck 287 km SW of Merizo Village, Guam on December 11, 2022 at 20:29 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000j9i9). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, December 11, 2022). M4.3 Earthquake 287 km SW of Merizo Village, Guam — December 11, 2022. Retrieved February 18, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000j9i9/