M5.1 Earthquake 220 km NW of Fais, Micronesia — October 31, 2023
2023-10-31 01:11:07 UTC (2023-10-31) · approx. 10:11 AM UTC+9 local
On October 31, 2023 at 01:11 UTC, a magnitude 5.1 shallow crustal earthquake struck 220 km NW of Fais, Micronesia, at a depth of 10.0 km and coordinates 11.2818°, 139.2163°. This earthquake was detected by 89 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 400, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.1 releases seismic energy equivalent to roughly 674 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.0 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
139.2163°E
Technical Information
Common Questions
How strong was the magnitude 5.1 earthquake near Fais, Micronesia?
The magnitude 5.1 earthquake that struck 220 km NW of Fais, Micronesia on October 31, 2023 at 01:11 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 11.2818°, 139.2163°, which is 220 km NW of Fais, Micronesia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.1 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000l7p6). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 31, 2023). M5.1 Earthquake 220 km NW of Fais, Micronesia — October 31, 2023. Retrieved January 10, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000l7p6/