M4.4 Earthquake 30 km W of Bukittinggi, Indonesia — August 14, 2021
2021-08-14 22:31:25 UTC (2021-08-14) · approx. 5:31 AM UTC+7 local
On August 14, 2021 at 22:31 UTC, a magnitude 4.4 intermediate depth earthquake struck 30 km W of Bukittinggi, Indonesia, at a depth of 131.7 km and coordinates -0.3216°, 100.0989°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
100.0989°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.4 earthquake near Bukittinggi, Indonesia?
The magnitude 4.4 earthquake that struck 30 km W of Bukittinggi, Indonesia on August 14, 2021 at 22:31 UTC had a depth of 131.7 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 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000f3ri). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, August 14, 2021). M4.4 Earthquake 30 km W of Bukittinggi, Indonesia — August 14, 2021. Retrieved October 29, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000f3ri/