What Is the Omega Block? The Weather Phenomenon Behind Europe’s Deadly 2026 Heatwave

Europe is enduring one of its most dangerous heatwaves in recent years, with temperatures exceeding 40°C across several countries and dozens of heat-related deaths reported.

Meteorologists say a powerful weather pattern known as the "Omega Block" is the main reason the extreme heat has become so persistent and severe.

The phenomenon has trapped hot air over Western Europe, turning what might have been a short heat spell into a prolonged and deadly event.