Omega Block weather pattern brings summer back to Central US, needed rain for Pacific Northwest

Omega Block weather pattern brings summer back to Central US, needed rain for Pacific Northwest

An Omega Block resembles the Greek letter Ω (Omega). It forms when the jet stream dips over the East and West Coasts while a ridge builds over the Central Plains. This setup allows storms to track along the jet stream, bringing unsettled weather to both coasts. Temperatures in the central part of the country are expected to rebound quickly, climbing into the 80s and 90s by Thursday. Cooler and wetter conditions will finally return to the Pacific Northwest which is experiencing one of its top-10 warmest and driest summers.