M4.3 Earthquake in the Guam region — June 19, 2023
2023-06-19 22:36:48 UTC (2023-06-19) · approx. 8:36 AM UTC+10 local
On June 19, 2023 at 22:36 UTC, a magnitude 4.3 intermediate depth earthquake struck in the Guam region, at a depth of 211.7 km and coordinates 13.0461°, 143.3593°.
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
143.3593°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake in the Guam region?
The magnitude 4.3 earthquake that struck in the Guam region on June 19, 2023 at 22:36 UTC had a depth of 211.7 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: us6000knga). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, June 19, 2023). M4.3 Earthquake in the Guam region — June 19, 2023. Retrieved August 26, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000knga/