Overview
- SAWS, which updated its forecast Monday, issued a yellow level 4 alert for severe thunderstorms on Tuesday across eastern and south‑western Limpopo, northern Gauteng and extreme north‑western Mpumalanga.
- A level 4 alert signals significant impact potential with storms that can produce damaging winds, large hail, intense lightning and heavy rain that may flood roads, low‑lying areas and vulnerable settlements.
- Coastal zones face yellow level 2 warnings for damaging winds and waves between Alexander Bay and Algoa Bay, with a storm‑surge warning from Plettenberg Bay to Algoa Bay that could disrupt port and small‑harbour operations.
- Forecasters tie the threats to a typical autumn pattern with a surface trough over the interior and the Atlantic High ridging in, a setup that fuels unstable air and scattered to widespread thundershowers.
- Authorities urge people to secure loose items, avoid risky travel and stay off rough coastlines, while the north coast of KwaZulu‑Natal faces hot, humid conditions that can be dangerous for those with health risks.