Hail in Roodepoort on Thursday.
JOHANNESBURG - The West Rand has been hit by hail as big as golf balls and in other places as big as R5 coins, a resident in Roodepoort said.
Another resident said, "The ground looks like it has been snowing."
The South African Weather Service sent out a warning of severe thunderstorms across Gauteng on Thursday.
It has issued a warning of flooding in low-lying areas.
Johannesburg metro police said a unit had been sent out to different areas to investigate the extent of the damage caused by the storm.
The JMPD reported a minor accident around the CBD and Rosebank and warned of flooding on Witkoppen Road.
ER24 emergency services said on Facebook, "Hail storm havoc in Johannesburg, at Lanseria airport a plane blew over."
However, airport officials said they had received no such reports.
Claudette Vianello, a spokeswoman for Lanseria, said: "I have confirmed with the airport manager that no incident has happened."