An Omega Block is a pattern where a ridge of high pressure is sandwiched between dips in the jet stream where area of low pressure are usually found. The name comes from the pattern's resemblance ...

What does it mean? Published: May. 02, 2023, 11:21 a.m. A jet stream pattern, named after its similar shape to the Greek letter, that has settled over the United States in early May, 2023.