The South African Weather Service (SAWS) has issued an Orange Level 9 warning for disruptive rainfall across Gauteng and the western Highveld of Mpumalanga, set to impact the provinces on Sunday, 16 November 2025.
The alert, one of the highest issued by the weather service, signals a high-impact weather system capable of delivering up to 150mm of rainfall, with SAWS noting that there is “about a 100% chance” of significant downpours in several areas. The anticipated cut-off low system is expected to trigger rapid flooding, dangerous, fast-flowing streams, and major disruptions to road networks and infrastructure.
SAWS has cautioned that the conditions pose a serious risk to life and property, urging communities to act proactively. “We are urging residents to take this warning seriously,” the service said. “With the amount of rain forecast, flooding may develop quickly and unexpectedly, especially in low-lying and urban areas.”
Emergency services are also bracing for impact. Johannesburg Emergency Management Services (EMS) spokesperson Robert Mulaudzi raised concerns about the vulnerability of flood-prone communities, noting that saturated roads could heighten risks for motorists.
“Most roads are wet and slippery. Motorists are urged to exercise caution while driving, extend safe following distances, and avoid crossing flooded roads or low-lying bridges. EMS remains on high alert,” Mulaudzi said.
Residents are encouraged to take precautionary steps ahead of the storm, including clearing drainage systems, securing outdoor items, charging devices, and keeping essential emergency supplies close.
SAWS has emphasised the need for ongoing vigilance throughout Sunday. “Stay updated and follow official instructions. Conditions may change rapidly throughout the day,” the service warned.
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