M4.6 Earthquake 81 km SE of Honiara, Solomon Islands — March 31, 2025
2025-03-31 22:37:50 UTC (2025-03-31) · approx. 9:37 AM UTC+11 local
On March 31, 2025 at 22:37 UTC, a magnitude 4.6 shallow crustal earthquake struck 81 km SE of Honiara, Solomon Islands, at a depth of 22.0 km and coordinates -9.9409°, 160.4921°. This earthquake was detected by 52 seismic stations with good location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
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
160.4921°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.6 earthquake near Honiara, Solomon Islands?
The magnitude 4.6 earthquake that struck 81 km SE of Honiara, Solomon Islands on March 31, 2025 at 22:37 UTC had a depth of 22.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -9.9409°, 160.4921°, which is 81 km SE of Honiara, 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: us6000q56q). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, March 31, 2025). M4.6 Earthquake 81 km SE of Honiara, Solomon Islands — March 31, 2025. Retrieved June 6, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000q56q/