M4.3 Earthquake 134 km NNE of Tobelo, Indonesia — July 4, 2021
2021-07-04 23:52:57 UTC (2021-07-04) · approx. 8:52 AM UTC+9 local
On July 4, 2021 at 23:52 UTC, a magnitude 4.3 intermediate depth earthquake struck 134 km NNE of Tobelo, Indonesia, at a depth of 223.3 km and coordinates 2.8393°, 128.5111°.
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
128.5111°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 134 km NNE of Tobelo, Indonesia on July 4, 2021 at 23:52 UTC had a depth of 223.3 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: us6000et8g). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, July 4, 2021). M4.3 Earthquake 134 km NNE of Tobelo, Indonesia — July 4, 2021. Retrieved September 10, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000et8g/