The German Weather Service records the warmest night on record after a 29.4°C low in Kubschütz, Saxony, breaking the previous overnight mark.Forecasters warn the heatwave will push daytime highs toward 42°C in eastern and southeastern areas while severe thunderstorms, heavy rain, hail and strong winds complicate emergency responses.The heat fuels wildfires including a 19-hectare blaze in Gohrischheide, provokes a one-day peak of 412M liters of water use in Hamburg, disrupts rail and tram services and prompts calls for a rapid cooling program and wildlife protections.