M4.8 Earthquake 25 km S of Kigoma, Tanzania — August 4, 2023
2023-08-04 22:06:16 UTC (2023-08-04) · approx. 12:06 AM UTC+2 local
Felt by 4 people across nearby locations.
On August 4, 2023 at 22:06 UTC, a magnitude 4.8 shallow crustal earthquake struck 25 km S of Kigoma, Tanzania, at a depth of 10.0 km and coordinates -5.1108°, 29.6299°. This earthquake was detected by 71 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 356, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 4 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
29.6299°E
Technical Information
Common Questions
How strong was the magnitude 4.8 earthquake near Kigoma, Tanzania?
The magnitude 4.8 earthquake that struck 25 km S of Kigoma, Tanzania on August 4, 2023 at 22:06 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 -5.1108°, 29.6299°, which is 25 km S of Kigoma, Tanzania.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000kxz5). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, August 4, 2023). M4.8 Earthquake 25 km S of Kigoma, Tanzania — August 4, 2023. Retrieved October 7, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kxz5/