Interesting Statistics: Joburg Earthquake strongest in 6 years

The earthquake that struck Gauteng on Sunday night (11 June 2023) was the strongest in 6 years.

The last notable earthquake in the region was on April 3rd, 2017, when a 5.2 magnitude earthquake hit 148 km further west-southwest. An even stronger magnitude 5.4 earthquake struck on August 5th, 2014.

Some interesting stats courtesy of earthquakelist.org

*A total of 126 earthquakes with a magnitude of four or above have struck within 300 kilometers of South Africa in the past 10 years. This comes down to a yearly average of 12 earthquakes per year, or 1 per month. On average an earthquake will hit near South Africa roughly every 28 days.

*A relatively large number of earthquakes occurred near South Africa in 2018. A total of 20 earthquakes (mag 4+) were detected within 300 km of South Africa that year. The strongest had a 4.6 magnitude.

*The strongest recent earthquake of the past 10 years near South Africa occurred on Aug 5, 2014 12:22 local time (Africa/Johannesburg timezone). It had a magnitude of 5.4 and struck 16 kilometers (10 mi) south-southeast of Klerksdorp, at a depth of 5 km. Discover more strong earthquakes near South Africa in the list below.

*A longer time ago, a MAG-6.8 earthquake struck on Dec 31, 1932 08:30, 120 kilometers south-southeast of Richards Bay. It is the strongest earthquake near South Africa in the past 123 years (data goes back to January 1st, 1900).


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