Tilted updraft

A tilted updraft (also known as a tilted storm) is a thunderstorm which is not vertically erect.^[1][2] This happens as a result of unidirectional wind shear, or a change in wind speed with height. In such an environment, the top of the updraft is pushed further downstream than the lower parts as a result of stronger winds pushing the top, as it is higher in the atmosphere. Storms that occur in environments with wind shear are more likely to be severe.^[1][2]

RHI from a research radar in Colorado sampling a visibly tilted updraft