M4.5 Earthquake 261 km WSW of Merizo Village, Guam — September 7, 2025
2025-09-07 23:40:52 UTC (2025-09-07) · approx. 8:40 AM UTC+9 local
On September 7, 2025 at 23:40 UTC, a magnitude 4.5 intermediate depth earthquake struck 261 km WSW of Merizo Village, Guam, at a depth of 87.4 km and coordinates 12.3193°, 142.4637°. This earthquake was detected by 19 seismic stations with good 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
142.4637°E
Technical Information
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Common Questions
How strong was the magnitude 4.5 earthquake near Merizo Village, Guam?
The magnitude 4.5 earthquake that struck 261 km WSW of Merizo Village, Guam on September 7, 2025 at 23:40 UTC had a depth of 87.4 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 12.3193°, 142.4637°, which is 261 km WSW of Merizo 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: us6000re1j). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 7, 2025). M4.5 Earthquake 261 km WSW of Merizo Village, Guam — September 7, 2025. Retrieved November 30, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000re1j/