M4.3 Earthquake 110 km SW of Merizo Village, Guam — May 17, 2023
2023-05-17 22:25:06 UTC (2023-05-17) · approx. 8:25 AM UTC+10 local
On May 17, 2023 at 22:25 UTC, a magnitude 4.3 shallow crustal earthquake struck 110 km SW of Merizo Village, Guam, at a depth of 35.0 km and coordinates 12.4333°, 144.1002°.
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
144.1002°E
Technical Information
Common Questions
How strong was the magnitude 4.3 earthquake near Merizo Village, Guam?
The magnitude 4.3 earthquake that struck 110 km SW of Merizo Village, Guam on May 17, 2023 at 22:25 UTC had a depth of 35.0 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.
Actions
Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000kdwh). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, May 17, 2023). M4.3 Earthquake 110 km SW of Merizo Village, Guam — May 17, 2023. Retrieved July 24, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kdwh/