M4.7 Earthquake 18 km NNW of Igugunu, Tanzania — October 11, 2026
2026-10-11 16:48:02 UTC (2026-10-11) · approx. 6:48 PM UTC+2 local
On October 11, 2026 at 16:48 UTC, a magnitude 4.7 shallow crustal earthquake struck 18 km NNW of Igugunu, Tanzania, at a depth of 10.0 km and coordinates -4.4024°, 34.5941°. This earthquake was detected by 19 seismic stations with good location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
34.5941°E
Technical Information
Common Questions
How strong was the magnitude 4.7 earthquake near Igugunu, Tanzania?
The magnitude 4.7 earthquake that struck 18 km NNW of Igugunu, Tanzania on October 11, 2026 at 16:48 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -4.4024°, 34.5941°, which is 18 km NNW of Igugunu, Tanzania.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000u3n8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, October 11, 2026). M4.7 Earthquake 18 km NNW of Igugunu, Tanzania — October 11, 2026. Retrieved October 23, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000u3n8/