Weak mag. 2.7 earthquake - 3.3 km southeast of Stilfontein, South Africa, on Saturday, Dec 11, 2021 at 2:42 am (GMT +2) -
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Weak magnitude 2.7 earthquake at 10 km depth
11 Dec 00:49 UTC: First to report: CGS after 6 minutes.
11 Dec 01:56: Magnitude recalculated from 2.4 to 2.7.
11 Dec 04:28: Epicenter location corrected by 1.1 km (0.7 mi) towards NW.
11 Dec 01:56: Magnitude recalculated from 2.4 to 2.7.
11 Dec 04:28: Epicenter location corrected by 1.1 km (0.7 mi) towards NW.
Earthquake details
| Date & time | Dec 11, 2021 00:42:38 UTC - |
| Local time at epicenter | Saturday, Dec 11, 2021 at 2:42 am (GMT +2) |
| Status | Confirmed |
| Magnitude | 2.7 |
| Depth | 10.0 km |
| Epicenter latitude / longitude | 26.867°S / 26.79°E  (Dr Kenneth Kaunda District Municipality, North West, South Africa) |
| Antipode | 26.867°N / 153.21°W |
| Shaking intensity | Very weak shaking |
| Felt | 0 reports |
| Primary data source | CGS (Council for Geoscience, South African National Seismograph Network) |
| Nearby towns and cities | 3 km (2 mi) SE of Stilfontein (North-West) (pop: 93,100) | Show on map | Quakes nearby 12 km (8 mi) E of Klerksdorp (North-West) (pop: 178,900) | Show on map | Quakes nearby 17 km (11 mi) NE of Orkney (North-West) (pop: 145,800) | Show on map | Quakes nearby 35 km (22 mi) WSW of Potchefstroom (North-West) (pop: 123,700) | Show on map | Quakes nearby 41 km (26 mi) NNW of Viljoenskroon (Orange Free State) (pop: 55,000) | Show on map | Quakes nearby 61 km (38 mi) NNE of Bothaville (Orange Free State) (pop: 71,900) | Show on map | Quakes nearby 66 km (41 mi) W of Paris (Free State) (pop: 71,300) | Show on map | Quakes nearby 82 km (51 mi) WSW of Fochville (North-West) (pop: 62,400) | Show on map | Quakes nearby 131 km (81 mi) SW of Krugersdorp (Gauteng) (pop: 378,800) | Show on map | Quakes nearby 187 km (116 mi) SW of Pretoria (Gauteng) (pop: 1,619,400) | Show on map | Quakes nearby |
| Weather at epicenter at time of quake | Overcast Clouds  17°C (63 F), humidity: 79%, wind: 4 m/s (7 kts) from ESE |
| Estimated seismic energy released | 7.1 x 108 joules (197 kilowatt hours, equivalent to 0.169 tons of TNT) | about seismic energy |
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
| Mag. | Depth | Location | Source |
| 2.7 | 10 km | South Africa Region | CGS |
User reports for this quake
At magnitude 2.7, this quake might have been felt very close to the epicenter and under calm conditions.User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Earlier earthquakes in the same area
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