Rex block

Rex Block is a meteorological phenomenon where a high-pressure system becomes trapped north of a low-pressure system. This creates a blocking pattern that can lead to persistent weather conditions, such as heatwaves, droughts, or heavy rainfall.

In simpler terms: Imagine the atmosphere as an ocean. A Rex Block is like a big, stationary island in that ocean that prevents the normal flow of weather patterns. This can lead to extreme weather in certain areas.