Weather forecast, alerts and UVB index for all South African provinces, 22 April 2021 This forecast is designed to be a quick overview of what lies in store. Weather data provided by the South African Weather Service. For a detailed forecast of your province, click here. Severe Weather Alerts IMPACT-BASED WARNINGS: Yellow 1 warning for severe thunderstorms with heavy rain, large hail and excessive lightning in places, resulting in localized flooding of low lying areas and damage to property over the south eastern half of the Eastern Cape. FIRE DANGER WARNINGS: Extremely high fire danger conditions are expected over the Hantam municipality of the Northern Cape as well as the central and northern parts of the Northern Cape.