M4.5 Earthquake 143 km W of Umatac Village, Guam — March 3, 2025
2025-03-03 20:08:20 UTC (2025-03-03) · approx. 6:08 AM UTC+10 local
On March 3, 2025 at 20:08 UTC, a magnitude 4.5 intermediate depth earthquake struck 143 km W of Umatac Village, Guam, at a depth of 220.9 km and coordinates 13.0609°, 143.3602°. This earthquake was detected by 86 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
143.3602°E
Technical Information
Common Questions
How strong was the magnitude 4.5 earthquake near Umatac Village, Guam?
The magnitude 4.5 earthquake that struck 143 km W of Umatac Village, Guam on March 3, 2025 at 20:08 UTC had a depth of 220.9 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 13.0609°, 143.3602°, which is 143 km W of Umatac Village, Guam.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us6000pwpg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, March 3, 2025). M4.5 Earthquake 143 km W of Umatac Village, Guam — March 3, 2025. Retrieved May 8, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000pwpg/