M4.1 Earthquake 31 km N of Asan-Maina Village, Guam — May 20, 2025
2025-05-20 17:35:36 UTC (2025-05-20) · approx. 3:35 AM UTC+10 local
On May 20, 2025 at 17:35 UTC, a magnitude 4.1 intermediate depth earthquake struck 31 km N of Asan-Maina Village, Guam, at a depth of 162.7 km and coordinates 13.7493°, 144.6709°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
144.6709°E
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Common Questions
How strong was the magnitude 4.1 earthquake near Asan-Maina Village, Guam?
The magnitude 4.1 earthquake that struck 31 km N of Asan-Maina Village, Guam on May 20, 2025 at 17:35 UTC had a depth of 162.7 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000qhqb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, May 20, 2025). M4.1 Earthquake 31 km N of Asan-Maina Village, Guam — May 20, 2025. Retrieved July 25, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000qhqb/