M4.6 Earthquake 209 km SW of Gizo, Solomon Islands — March 18, 2021
2021-03-18 23:55:54 UTC (2021-03-18) · approx. 9:55 AM UTC+10 local
On March 18, 2021 at 23:55 UTC, a magnitude 4.6 shallow crustal earthquake struck 209 km SW of Gizo, Solomon Islands, at a depth of 10.0 km and coordinates -9.5909°, 155.6601°.
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
155.6601°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.6 earthquake near Gizo, Solomon Islands?
The magnitude 4.6 earthquake that struck 209 km SW of Gizo, Solomon Islands on March 18, 2021 at 23:55 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 -9.5909°, 155.6601°, which is 209 km SW of Gizo, 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: us6000dwnz). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, March 18, 2021). M4.6 Earthquake 209 km SW of Gizo, Solomon Islands — March 18, 2021. Retrieved May 26, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000dwnz/