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Strong mag. 5.3 earthquake - 6.8 km east of Orkney, South Africa, on Tuesday, August 05, 2014 12:22:34

Strong mag. 5.3 earthquake - 6.8 km east of Orkney, South Africa, on Tuesday, August 05, 2014 12:22:34 Strong mag. 5.3 earthquake - 6.8 km east of Orkney, South Africa, on Tuesday, August 05, 2014 12:22:34

Strong magnitude 5.3 earthquake at 10 km depth

5 Aug 11:10 UTC: First to report: USGS after 47 minutes.

Earthquake details

Date & timeAug 5, 2014 10:22:34 UTC
Local time at epicenterTuesday, August 05, 2014 12:22:34
StatusConfirmed
Magnitude5.3
Depth10.0 km
Epicenter latitude / longitude26.9862°S / 26.7415°E (Dr Kenneth Kaunda District Municipality, North West, South Africa)
Antipode26.986°N / 153.259°W
Shaking intensityModerate shaking
Felt82 reports
Primary data sourceUSGS (United States Geological Survey)
Nearby towns and cities7 km (4 mi) E of Orkney (North-West) (pop: 145,800) | Show on map | Quakes nearby
16 km (10 mi) S of Stilfontein (North-West) (pop: 93,100) | Show on map | Quakes nearby
17 km (10 mi) SSE of Klerksdorp (North-West) (pop: 178,900) | Show on map | Quakes nearby
32 km (20 mi) NW of Viljoenskroon (Orange Free State) (pop: 55,000) | Show on map | Quakes nearby
46 km (29 mi) NNE of Bothaville (Orange Free State) (pop: 71,900) | Show on map | Quakes nearby
47 km (29 mi) SW of Potchefstroom (North-West) (pop: 123,700) | Show on map | Quakes nearby
137 km (85 mi) SW of Soweto (Gauteng) (pop: 1,695,000) | Show on map | Quakes nearby
156 km (97 mi) SW of Johannesburg (Gauteng) (pop: 2,026,500) | Show on map | Quakes nearby
166 km (103 mi) SE of Mahikeng (North-West) (pop: 14,000) | Show on map | Quakes nearby
200 km (124 mi) SW of Pretoria (Gauteng) (pop: 1,619,400) | Show on map | Quakes nearby
Estimated seismic energy released5.6 x 1012 joules (1.56 gigawatt hours, equivalent to 1344 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.
Mag.DepthLocationSource
5.310 km6km E of Orkney, South AfricaUSGS
5.410 kmSouth AfricaGFZ
5.210 km SOUTH AFRICAEMSC
shake map
(shakemap: USGS)

User reports for this quake (283)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Stilfontein / Very strong shaking (MMI VII) : Very violent shaking heard it before feeling it.   
Klerksdorp / Very strong shaking (MMI VII) : We are about 16 km from epicenter. It was really very scary. Church bells were ringing. My kids school had to evacuate due to cracks in the walls. It was two shakes, but here it felt like one long continuous shake.  
Vryburg, North-West / Light shaking (MMI IV) : The car rocked like a cradle. I will never forget the sound.  
johannesburg / Moderate shaking (MMI V)
Kimberley / Light shaking (MMI IV) : Building moving. On 2nd floor at the time. Chairs moving and computer screens shaking. Two events. Vibrations felt for a while.  
Klerksdorp / Strong shaking (MMI VI) : I am an 66 year old citizen of this area, and this was the WORST I have experienced in all my life!!! Worked on th mines prior to 1983, and also underground, and NEVER would like to be in situation like this if underground. My house are full of cracks, pl  
Johannesburg (153.3 km NE of epicenter) [Map] / Moderate shaking (MMI V)
Johannesburg (153.3 km NE of epicenter) [Map] / Moderate shaking (MMI V)
Johannesburg (153.3 km NE of epicenter) [Map] / Violent shaking (MMI IX)
Hekpoort (147.8 km NE of epicenter) [Map] / Moderate shaking (MMI V)
Durban, South Africa (519.1 km SE of epicenter) [Map] / Light shaking (MMI IV)
bloemfontein,bloemspruit / Light shaking (MMI IV) : My chair was shaking, and I thought it was about to break, but ignored it  
Sasolburg (108.6 km E of epicenter) [Map] / Moderate shaking (MMI V) : Everything was shaking. It felt weird feeling everything moving around you  
Brooklyn Pretoria (200.6 km NE of epicenter) [Map] / Moderate shaking (MMI V)
VANDERBIJLPARK / Moderate shaking (MMI V)
20 dover street Randburg / Light shaking (MMI IV) : was at the office and just felt my chair bumping and though a heavy truch was passing by, only to discover tht it was a quake nearly wet myself  
Sandton / Strong shaking (MMI VI)
Parys / Moderate shaking (MMI V)
Parys / Moderate shaking (MMI V)
Braamfontein, Johannesburg (156.4 km NE of epicenter) [Map] / Moderate shaking (MMI V) : I was on the 17th floor of an office building - I felt swaying rather than shaking. It was rather frightening.  
pretoria / Moderate shaking (MMI V) : scary  
pretoria / Weak shaking (MMI III)
Eloffsdall, Pretoria North / Very weak shaking (MMI II) : I distinctly felt it as I am in a site office, container type office, it stands on small pillars about 500cm off the ground. It was very weak but I felt it... it was strange, but I never really entertained the thought of an earthquake / tremor...  
City Deep, Johannesburg, South Africa / Moderate shaking (MMI V)
bryanston, johannesburg, South Africa (164.2 km NE of epicenter) [Map] / Strong shaking (MMI VI)
Pretoria (203.3 km NE of epicenter) [Map] / Light shaking (MMI IV) : I felt it!  
Johannesburg (150 km NE of epicenter) [Map] / Light shaking (MMI IV) : It was scary for me because we don't often get earthquakes.  
south africa, Potchefstroom / Moderate shaking (MMI V)
Kempton Park / Moderate shaking (MMI V) : Very scary.......  
Waltloo, Pretoria (211.4 km NE of epicenter) [Map] / Light shaking (MMI IV) : Thought it was the builders working onsite. cup of coffee almost fell off the desk  
bloemfontein / Light shaking (MMI IV)
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