On Fri, 13 Jan 2017 12:59:19 +0000, Martin Gregorie wrote:

On Fri, 13 Jan 2017 01:18:56 -0800, Bruce Hoult wrote:

On Thursday, January 12, 2017 at 5:49:56 PM UTC+3, Tango Eight wrote:
http://tinyurl.com/gsmxwne

Surely this is standard wave cloud, not the 'Glory? Wave clouds being
stationary in the wind, while the Glory cloud travels out from the
desert to the northern ocean at a good clip (100 km/h?)

I think you're right. Still a fantastic cloud pattern, though.

Changed my mind: took another look at the airliner pic - clouds are
rotors rather than lenticulars. yellowplaintain's post mentions a cold
front which rather clinched the roll cloud interpretation.


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