Western Europe is currently experiencing an intense heatwave, with France reporting over 40 fatalities. This prolonged period of extreme heat is being driven by a rare atmospheric phenomenon called an “omega block.” This pattern resembles the Greek letter omega, trapping high-pressure systems in place and preventing cooler air from moving in. The blocking pattern is causing stagnant weather conditions and consistently rising temperatures across the region. Experts indicate that such omega blocks are becoming more frequent and intense due to climate change. The heatwave is impacting multiple countries, straining infrastructure and prompting health warnings for vulnerable populations.