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Omega Block Weather Pattern
July 3 , 2026
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- An Omega Block weather pattern is driving the deadly heatwave across Western Europe, with temperatures crossing 40°C in parts of France and Spain.
- An Omega Block is a high-pressure system trapped between two low-pressure systems, forming the shape of the Greek letter Omega (Ω).
- It disrupts the normal jet stream, causing the weather system to remain stationary for 3–10 days or even several weeks.
- The high-pressure area brings hot, dry, cloud-free conditions, while the surrounding low-pressure areas receive cooler and wetter weather.
- Scientists agree that climate change increases the intensity and frequency of heatwaves, although its effect on the frequency of Omega Blocks is still under scientific study.
- Warmer global temperatures make heatwaves during Omega Block events more severe and longer-lasting.
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