M4.2 Earthquake 169 km SSE of Lata, Solomon Islands — July 6, 2020
2020-07-06 20:38:22 UTC (2020-07-06) · approx. 7:38 AM UTC+11 local
On July 6, 2020 at 20:38 UTC, a magnitude 4.2 intermediate depth earthquake struck 169 km SSE of Lata, Solomon Islands, at a depth of 140.0 km and coordinates -12.0777°, 166.5328°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.0 mainshock that occurred 20 days ago 201 km SSE of Lata, Solomon Islands. Since the mainshock, the USGS has recorded 0 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
166.5328°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Lata, Solomon Islands?
The magnitude 4.2 earthquake that struck 169 km SSE of Lata, Solomon Islands on July 6, 2020 at 20:38 UTC had a depth of 140.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M5.0 one earlier?
No. This magnitude 4.2 earthquake is an aftershock of the larger magnitude 5.0 mainshock that occurred earlier 201 km SSE of Lata, Solomon Islands. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000alfq). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 6, 2020). M4.2 Earthquake 169 km SSE of Lata, Solomon Islands — July 6, 2020. Retrieved September 11, 2020 from https://www.earthquaketracker.org/earthquakes/event/us7000alfq/