A 3.5-magnitude earthquake which lasted about 10 seconds struck Saldanha on around 12:27am on Tuesday and mense from various parts in Cape Town felt the earth move.
Although the tremor was small enough not to cause damage , many people felt weak shaking 100 km from the epicentre, reported Volcano Discovery.
The United States Geological Survey confirmed that the depth of the quake was 5km.
On September 26, a 6.2-magnitude earthquake was detected roughly 1600km offshore in Cape Town which was then followed by 2.5- and 2.9-magnitude tremors that were felt even in the Northern Suburbs.
At the time a geophysicist warned that it could happen again.
Professor Andrzej Kijko, director of the Natural Hazards Centre at the University of Pretoria, said if Cape Town were to be hit by a large seismic event, there would be major damage to the city’s infrastructure and property.