Intense thunderstorms developed across the Bohemian Forest and Giant Mountains regions of the Czech Republic shortly after midday, following a period of extreme heat. The Prachatice and Český Krumlov districts experienced particularly severe hail, with stones reaching sizes of two to five centimeters – comparable to ping pong balls. Rail service near Vimperk was temporarily suspended due to the storm’s impact. Meteorologists are warning of a high probability of further, intense storm development throughout South Bohemia. The storms are described as spreading rapidly and explosively. Authorities are advising residents to take precautions against severe weather. The initial storms mark the beginning of anticipated weather changes after recent high temperatures.