M4.5 Earthquake 245 km NNE of Fais, Micronesia — August 31, 2025
2025-08-31 21:39:55 UTC (2025-08-31) · approx. 6:39 AM UTC+9 local
On August 31, 2025 at 21:39 UTC, a magnitude 4.5 shallow crustal earthquake struck 245 km NNE of Fais, Micronesia, at a depth of 35.0 km and coordinates 11.8039°, 141.3984°. This earthquake was detected by 29 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
141.3984°E
Technical Information
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Common Questions
How strong was the magnitude 4.5 earthquake near Fais, Micronesia?
The magnitude 4.5 earthquake that struck 245 km NNE of Fais, Micronesia on August 31, 2025 at 21:39 UTC had a depth of 35.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 11.8039°, 141.3984°, which is 245 km NNE of Fais, Micronesia.
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: us6000rclm). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 31, 2025). M4.5 Earthquake 245 km NNE of Fais, Micronesia — August 31, 2025. Retrieved November 19, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000rclm/