At least 34 houses were damaged in Soweto after a severe storm swept through the township yesterday afternoon.
Three of the houses - in Protea Glen Extension 11 - were completely destroyed.
No casualties or injuries were reported.
Jan Vermeulen, a senior forecaster at the SA Weather Service, said it was still not known whether the storm was a tornado.
"There are indications that it could have been a mini-tornado. My readings indicate that there was a severe wind that travelled at 125km/h," said Vermeulen, who added that tornadoes usually travelled at more than 200km/h.
Leonard Zimbi, his wife Selina, and their two children, Constance and Naledi, will now have to share the one room of their four-roomed home that was not affected by the storm.