Weak mag. 2.7 earthquake - 2.9 km northwest of Welkom, South Africa, on Tuesday, Apr 12, 2022 at 7:25 am (GMT +2) -

Weak mag. 2.7 earthquake - 2.9 km northwest of Welkom, South Africa, on Tuesday, Apr 12, 2022 at 7:25 am (GMT +2) Weak mag. 2.7 earthquake - 2.9 km northwest of Welkom, South Africa, on Tuesday, Apr 12, 2022 at 7:25 am (GMT +2)

Weak magnitude 2.7 earthquake at 10 km depth

12 Apr 05:31 UTC: First to report: VolcanoDiscovery after 6 minutes.
12 Apr 05:35: Now using data updates from CGS
12 Apr 06:00: Magnitude recalculated from 2.5 to 2.7.

Earthquake details

Date & timeApr 12, 2022 05:25:03 UTC -
Local time at epicenterTuesday, Apr 12, 2022 at 7:25 am (GMT +2)
Depth10.0 km
Epicenter latitude / longitude27.959°S / 26.714°E (Lejweleputswa District Municipality, Orange Free State, South Africa)
Antipode27.959°N / 153.286°W
Shaking intensityWeak shaking
Felt4 reports
Primary data sourceCGS (Council for Geoscience, South African National Seismograph Network)
Nearby towns and cities3 km (2 mi) NW of Welkom (pop: 431,900) | Show on map | Quakes nearby
14 km (9 mi) SSW of Kutloanong (pop: 95,000) | Show on map | Quakes nearby
22 km (14 mi) NW of Virginia (pop: 122,500) | Show on map | Quakes nearby
24 km (15 mi) SSE of Allanridge (pop: 31,700) | Show on map | Quakes nearby
31 km (19 mi) W of Hennenman (pop: 22,800) | Show on map | Quakes nearby
36 km (22 mi) ESE of Wesselsbron (pop: 42,600) | Show on map | Quakes nearby
50 km (31 mi) N of Theunissen (pop: 34,700) | Show on map | Quakes nearby
62 km (38 mi) SW of Kroonstad (pop: 104,000) | Show on map | Quakes nearby
138 km (86 mi) NNE of Bloemfontein (pop: 463,100) | Show on map | Quakes nearby
286 km (178 mi) SSW of Pretoria (Gauteng) (pop: 1,619,400) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 13.2°C (56 F), humidity: 80%, wind: 2 m/s (4 kts) from ESE
Estimated seismic energy released7.1 x 108 joules (197 kilowatt hours, equivalent to 0.169 tons of TNT) | about seismic energy
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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.
2.710 kmSouth Africa RegionCGS

User reports for this quake (4)

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.
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Welkom, 380 State Way / Light shaking (MMI IV) / vertical swinging (up and down) / 1-2 s : I felt a big up and down motion under my feet, as if the floor lifted for a second and the sound was moderate  
Welkom Industrial, free state (5.6 km SE of epicenter) [Map] / Moderate shaking (MMI V) / both vertical and horizontal swinging / 2-5 s : Sitting at my deak  
Welkom / Very weak shaking (MMI II) / vibration and rolling / 1-2 s
welkom / Light shaking (MMI IV) / single lateral shake / 2-5 s
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