wedge tornado
n.— «The tornado that struck Greensburg is being described as at least a mile wide, perhaps a mile and a half wide. It was what is known as a “wedge” tornado, a tornado that looks wider than it does tall.» —“Large tornado levels Kansas town” in Greensburg, Kansas Weather.com May 5, 2007. (source: Double-Tongued Dictionary)
Further reading
After our conversation about the expression dingle day, a term used by workers at a research station in Antarctica to denote bright, sunny weather, a listener offers a possible explanation for this term. It may derive from the idea of the skies...
Byron in Florence, South Carolina, is curious about his grandmother’s expression might as well, can’t dance, which she used when someone suggested an activity. This saying, as well as longer versions, are rooted in the idea of weather...