M4.3 Earthquake 230 km NNW of Tobelo, Indonesia — July 15, 2021
2021-07-15 19:38:58 UTC (2021-07-15) · approx. 3:38 AM UTC+8 local
On July 15, 2021 at 19:38 UTC, a magnitude 4.3 shallow crustal earthquake struck 230 km NNW of Tobelo, Indonesia, at a depth of 40.4 km and coordinates 3.6761°, 127.2677°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
127.2677°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Tobelo, Indonesia?
The magnitude 4.3 earthquake that struck 230 km NNW of Tobelo, Indonesia on July 15, 2021 at 19:38 UTC had a depth of 40.4 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000exp2). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, July 15, 2021). M4.3 Earthquake 230 km NNW of Tobelo, Indonesia — July 15, 2021. Retrieved September 17, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000exp2/