M4.6 Earthquake 40 km SSE of Kirakira, Solomon Islands — October 20, 2021
2021-10-20 05:47:26 UTC (2021-10-20) · approx. 4:47 PM UTC+11 local
On October 20, 2021 at 05:47 UTC, a magnitude 4.6 intermediate depth earthquake struck 40 km SSE of Kirakira, Solomon Islands, at a depth of 74.1 km and coordinates -10.7892°, 162.0651°.
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
162.0651°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.6 earthquake near Kirakira, Solomon Islands?
The magnitude 4.6 earthquake that struck 40 km SSE of Kirakira, Solomon Islands on October 20, 2021 at 05:47 UTC had a depth of 74.1 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -10.7892°, 162.0651°, which is 40 km SSE of Kirakira, Solomon Islands.
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.
Authoritative source: USGS event page (event ID: us6000fxf2). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, October 20, 2021). M4.6 Earthquake 40 km SSE of Kirakira, Solomon Islands — October 20, 2021. Retrieved December 25, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000fxf2/