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Over the past week a heatwave was forecast for Gauteng, North West, Limpopo, Free State and Mpumalanga and is reaching an end today, 3 December 2019…
According to the South African Weather Service, completely different weather conditions are expected, with much needed rainfall expected from tonight, tomorrow (Wednesday) and Thursday, as well as a drop in temperatures in places.
This is as a result of a surface high pressure system that will push southwest-Indian ocean moisture into the eastern, northern and later the central parts of the country. An upper trough is responsible for drawing tropical moisture from Angola into the central and north-eastern parts of South Africa.
Areas of concern for heavy rain (> 50 mm per day) with possible flooding are the southern parts of Gauteng, northern parts of the Free State and the central parts of North West on Wednesday (4 – 5 December 2019).
Persistent thunderstorms could result in more flooding over the central parts of the North West and the north-western parts of the Free State on Thursday.
Localised flooding in susceptible informal and formal settlements could be expected, with possible closure of major roads crossing low water bridges and low-lying areas. Large amounts of small hail might lead to slippery roads and affecting driving conditions, which could lead to minor road accidents. Infrastructure wind and hail damage can be expected from severe thunderstorms in places.
The South African Weather Service will continue to monitor any further developments relating to this weather system and will issue subsequent updates as required. Furthermore, the public are urged and encouraged to regularly follow weather forecasts on television and radio.
According to Snow Report SA, there is the possibility of snow from tonight on the highest peaks in Lesotho, with up to 17cm indicated by earlier forecast data. Unfortunately for snow chasers, it won’t be falling in any areas accessible by vehicle.
There also appears to be sleet falling according to the webcams set up at the Tiffindel resort. “If this is the case we might see snow at slightly lower elevations, with places like Tiffindell, AfriSki and the top of Sani Pass seeing some light snowfalls,” according to a post by Snow Report SA.