A potent upper level low pressure system traversed across northern Africa on 12 March 2020, causing the development of strong winds at the surface. Water Vapor imagery from EUMETSAT Meteosat-8 shows the compact low advancing east across Egypt on the 12th, with gravity waves emanating southward across bordering countries (Fig 1).
The windy conditions at the surface resulted in a broad area of blowing dust across much of the northern half of the continent. The EUMETSAT Meteosat-8 satellite captured the lofted dust as it was carried south and west away from the low and over a long distance. The thick layer of lofted dust was captured well in both the 0.6 um VIS (Fig 2) and 10.8 um IR Window (Fig 3) single-band imagery.
Combining multiple bands to make multispectral imagery allowed for similar detection of dust across Africa. The dust was diagnosed in the split window difference and IR Window image combo, Geocolor, and Dust RGB imagery.
A closer look at region of optically thick blowing dust across Sudan is provided in Figure 7.