M4.5 Earthquake in the Federated States of Micronesia region — November 23, 2021
2021-11-23 22:27:42 UTC (2021-11-23) · approx. 8:27 AM UTC+10 local
On November 23, 2021 at 22:27 UTC, a magnitude 4.5 shallow crustal earthquake struck in the Federated States of Micronesia region, at a depth of 10.0 km and coordinates 10.5704°, 148.3093°.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
148.3093°E
Technical Information
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Common Questions
How strong was the magnitude 4.5 earthquake in the Federated States of Micronesia region?
The magnitude 4.5 earthquake that struck in the Federated States of Micronesia region on November 23, 2021 at 22:27 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 10.5704°, 148.3093°, which is in the Federated States of Micronesia region.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000fxag). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 23, 2021). M4.5 Earthquake in the Federated States of Micronesia region — November 23, 2021. Retrieved January 29, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000fxag/