cut-off low

A cut-off low pressure system is expected to bring rain to most parts of SA over the next five days. Image: SAWS.

Weekend weather: Cut-off low to bring wet weather to most of SA

A cut-off low pressure system is expected to bring rain to most of SA this weekend and beyond. There is a risk of flash flooding in places.

cut-off low

A cut-off low pressure system is expected to bring rain to most parts of SA over the next five days. Image: SAWS.

The South African Weather Service (SAWS) said most of the country would experience rain over the coming days, and there will be a risk of flash flooding in some places.

FLASH FLOODING RISK

The central and eastern parts of South Africa have already experienced flooding recently due to the rainfall since the start of the summer rainy season.

“The ground in many of these places remains saturated, and rivers and streams are running full. Under such conditions, a flash flood could be triggered quite easily, and the public is therefore strongly urged to be extra vigilant,” said the weather service.

CUT-OFF LOW

A cut-off low-pressure system is expected to lead to the next severe weather event. The system is developing to the west of South Africa and will likely intensify from Saturday, 10 December, as it nears landfall.

“The system will influence weather patterns over most parts of the country during the next five days, resulting in scattered to widespread showers and thundershowers in places,” said the weather service.

Severe thunderstorms and heavy rainfall will likely be seen from Saturday in the Northern Cape, Western Cape, Eastern Cape and KwaZulu-Natal.

The storms will spread to Free State on Sunday and North West, Gauteng and Mpumalanga by Monday, 12 December.

Hail and lightning are expected in places where the cut-off low will dominate.

Rainfall accumulation for 10 December 2022. Image: ©SAWS
Rainfall accumulation for 11 December 2022. Image: ©SAWS

STRONG WINDS FOR SOUTHWESTERN COASTAL AREAS

The weather service said the southwestern coastal areas of South Africa are expected to experience strong southeasterly winds of between 50 to 70km/h.

“Ordinarily southeasterly winds around the Cape Peninsula are associated with fair weather. However, with the presence of a cut-off low, there may be some thundershowers on Saturday and Sunday, leading to a phenomenon referred to as the ‘black-south-easter’.”

Rough seas are also expected along the southwestern coast due to the strong winds. The weather service has issued a Yellow Level 2 warning for wind and waves.

Impact Based Warnings issued by SAWS for damaging winds and waves on Saturday into Sunday (10 – 11 December 2022). Image: SAWS.

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