M3.9 Earthquake 261 km N of Saipan, Northern Mariana Islands — January 24, 2025
2025-01-24 20:01:16 UTC (2025-01-24) · approx. 6:01 AM UTC+10 local
On January 24, 2025 at 20:01 UTC, a magnitude 3.9 intermediate depth earthquake struck 261 km N of Saipan, Northern Mariana Islands, at a depth of 228.8 km and coordinates 17.5675°, 145.6076°.
Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 11 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 296 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
145.6076°E
Technical Information
Common Questions
How strong was the magnitude 3.9 earthquake near Saipan, Northern Mariana Islands?
The magnitude 3.9 earthquake that struck 261 km N of Saipan, Northern Mariana Islands on January 24, 2025 at 20:01 UTC had a depth of 228.8 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.9 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.9 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us7000paf6). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, January 24, 2025). M3.9 Earthquake 261 km N of Saipan, Northern Mariana Islands — January 24, 2025. Retrieved April 8, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000paf6/