Here is an image from Eumetsat's MetopB satellite passing over the Cape
Verde Islands at 1050z today. It shows an extensive and thick outbreak of
Saharan dust over the Atlantic, and interesting effects caused by the
islands can be seen. These include upwind accumulation of dust as the
airflow is slowed and deflected, and downwind lee effects including Von
Karman vortices. The visibility at the 3 CV stations reporting at 1200z was
800m. Surface wind direction NE 15 to 20kt. Note too, that visibility at
Dakar and other stations in Senegal is only 200m in dust haze.

http://www.woksat.info/etcadb17/adb17-1050-e-cv.html

--
Bernard Burton
Weather data and satellite images at:
www.woksat.info/wwp.html