Temperatures expected to rise in Gauteng, Northern Cape this week It also issued a heatwave warning for the Northern Cape, despite isolated thunder showers being forecast. Forecaster Madimetja Thema said, “We're expecting isolated thunder showers over the central and western interior up to Wednesday and Thursday. Read more on Eyewitness News South Africa: Operation … [Read more...] about New: Temperatures expected to rise in Gauteng, Northern Cape this week