W. Oxfordshire 15 Sep 2013 KH waves (? RFMI ) Not sure if they are or not
Posted 15 September 2013 - 14:31
This strange and fairly rare sight often occurs when the layers of the atmosphere are strongly sheared within one specific level. In short, lighter flow to stronger flow within a short vertical distance! Ultimately producing a corkscrew effect within that layer of cloud.
This post has been edited by Tony Gilbert: 15 September 2013 - 14:36