M4.0 Earthquake near Kepulauan Barat Daya, Indonesia — September 20, 2022
2022-09-20 20:33:38 UTC (2022-09-20) · approx. 5:33 AM UTC+9 local
On September 20, 2022 at 20:33 UTC, a magnitude 4.0 intermediate depth earthquake struck near Kepulauan Barat Daya, Indonesia, at a depth of 163.9 km and coordinates -7.4326°, 128.2861°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
128.2861°E
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Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Kepulauan Barat Daya, Indonesia?
The magnitude 4.0 earthquake that struck near Kepulauan Barat Daya, Indonesia on September 20, 2022 at 20:33 UTC had a depth of 163.9 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000inp1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, September 20, 2022). M4.0 Earthquake near Kepulauan Barat Daya, Indonesia — September 20, 2022. Retrieved November 26, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000inp1/