M4.6 Earthquake 155 km E of Kolonia, Micronesia — March 23, 2025
2025-03-23 13:34:30 UTC (2025-03-23) · approx. 12:34 AM UTC+11 local
On March 23, 2025 at 13:34 UTC, a magnitude 4.6 shallow crustal earthquake struck 155 km E of Kolonia, Micronesia, at a depth of 10.0 km and coordinates 6.8701°, 159.6121°. This earthquake was detected by 28 seismic stations with good location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
159.6121°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Kolonia, Micronesia?
The magnitude 4.6 earthquake that struck 155 km E of Kolonia, Micronesia on March 23, 2025 at 13:34 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 6.8701°, 159.6121°, which is 155 km E of Kolonia, Micronesia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000ppgr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, March 23, 2025). M4.6 Earthquake 155 km E of Kolonia, Micronesia — March 23, 2025. Retrieved May 29, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000ppgr/