This image was received on my system from NOAA17 via AVHRR Digital Transmission from Eumetsat.
Von Karman Vortices, named after Theodore von Karman, are caused by turbulence in a fluid where the flow is disturbed by an object. Any fluid will do, and in this case the turbulence in the air is caused by the wind passing over the island of Madeira.
A double row of vortices with alternating direction of rotation can be plainly seen extending downwind in the cloud about 1000 statute miles (1600 kilometers).
The Canary Islands can be seen to the South East with the west coast of Africa further away.