M4.8 Earthquake 47 km SE of Colonia, Micronesia — July 6, 2023
2023-07-06 21:41:13 UTC (2023-07-06) · approx. 6:41 AM UTC+9 local
On July 6, 2023 at 21:41 UTC, a magnitude 4.8 shallow crustal earthquake struck 47 km SE of Colonia, Micronesia, at a depth of 10.0 km and coordinates 9.2474°, 138.4548°. This earthquake was detected by 57 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 354, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
138.4548°E
Technical Information
Common Questions
How strong was the magnitude 4.8 earthquake near Colonia, Micronesia?
The magnitude 4.8 earthquake that struck 47 km SE of Colonia, Micronesia on July 6, 2023 at 21:41 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 9.2474°, 138.4548°, which is 47 km SE of Colonia, Micronesia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000kfh8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, July 6, 2023). M4.8 Earthquake 47 km SE of Colonia, Micronesia — July 6, 2023. Retrieved September 9, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kfh8/