September 17, 2025 - Even the atmosphere hits roadblocks sometimes, and this week’s forecast is a great example of an atmospheric weather pattern known as a Rex blocking pattern.

March 15, 2024 - This is the beginnings of a Rex Block, which really won't take shape until Saturday. A Rex Block is a weather pattern that includes a low over the southwestern United States and a ridge over the Pacific Northwest.

September 11, 2024 - A Rex Block is a weather pattern that was discovered in 1950 and introduced to us by Meteorologist Daniel Rex.

October 12, 2021 - How did the Rex Block get its name? The word “Rex” comes from Daniel F. Rex, the meteorologist who first discovered this phenomena and the word “Block” comes from its ability to stall and keep weather patterns the same for several days.

Rex Block · A blocking pattern where there is an upper level high located directly north of a closed low. You can either type in the word you are looking for in the box below or browse by letter.

October 3, 2024 - A Rex block is more complicated and dynamic than an Omega block. This setup unfolds when a ridge of high pressure develops north of a centre of low pressure, almost resembling a backwards letter S on weather maps.

September 10, 2025 - A rex block is when high pressure collects north of an area of low pressure, allowing storm systems to pass by via a southerly route. This setup is favorable for the Desert Southwest, but keeps the typically wet and cloudy Pacific Northwest dry.

May 12, 2025 - Much like Freddie Andersen in Game 3 vs. the Capitals, our weather pattern is blocking anything from moving for now. It's a pattern known as the Rex Block.

3 weeks ago - The short answer: a block that brings a hot, sunny, and settled pattern. The details: below.

April 24, 2026 - Ok, first, it’s a weather pattern named after the meteorologist who first identified and described this stagnant atmospheric scenario in 1950, Daniel Rex. Second, this is a completely normal, and in fact, pretty common springtime weather pattern.

May 25, 2023 - The Northeast has had pretty cool ... beyond), leading to warm, dry weather. A Rex block is a pattern that prevents other weather systems from moving through that region....

Rex blocks are characterized by a high-pressure system located pole-ward of a low-pressure system. The Rex block will remain nearly stationary until one of the height centers changes intensity, unbalancing the high-over-low pattern. Unsettled, stormy weather is usually found near the low pressure, ...