M4.9 Earthquake 108 km NW of Gizo, Solomon Islands — April 18, 2023
2023-04-18 16:51:04 UTC (2023-04-18) · approx. 2:51 AM UTC+10 local
On April 18, 2023 at 16:51 UTC, a magnitude 4.9 intermediate depth earthquake struck 108 km NW of Gizo, Solomon Islands, at a depth of 70.9 km and coordinates -7.5066°, 156.0577°. This earthquake was detected by 66 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
156.0577°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Gizo, Solomon Islands?
The magnitude 4.9 earthquake that struck 108 km NW of Gizo, Solomon Islands on April 18, 2023 at 16:51 UTC had a depth of 70.9 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -7.5066°, 156.0577°, which is 108 km NW of Gizo, Solomon Islands.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000k5c8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 18, 2023). M4.9 Earthquake 108 km NW of Gizo, Solomon Islands — April 18, 2023. Retrieved July 3, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k5c8/