A blocking high-pressure system is forming over Europe, poised to bring prolonged periods of stable, sunny, and very warm weather. The upcoming heatwave, the first of the summer, is expected to significantly impact southern and central Europe, with temperatures potentially reaching 10 degrees Celsius above normal for June. Unlike short-lived spikes, this heat is forecast to persist for an extended duration. Spain, Portugal, France, and Italy are among the countries expected to experience the most intense temperatures. This follows a heatwave experienced in May, indicating a potentially hotter-than-average summer. Authorities are preparing for potential impacts on public health and infrastructure.