M4.6 Earthquake 257 km N of Fais, Micronesia — July 28, 2020
2020-07-28 23:31:50 UTC (2020-07-28) · approx. 8:31 AM UTC+9 local
On July 28, 2020 at 23:31 UTC, a magnitude 4.6 shallow crustal earthquake struck 257 km N of Fais, Micronesia, at a depth of 10.0 km and coordinates 12.0718°, 140.1899°.
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
140.1899°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Fais, Micronesia?
The magnitude 4.6 earthquake that struck 257 km N of Fais, Micronesia on July 28, 2020 at 23:31 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 12.0718°, 140.1899°, which is 257 km N of Fais, 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: us6000b8sj). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 28, 2020). M4.6 Earthquake 257 km N of Fais, Micronesia — July 28, 2020. Retrieved October 3, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000b8sj/