Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Atmospheric composition Weather Meteosat Data Tags MSG Africa SEVIRI Terra/Aqua MODIS Date 2010 Date March June July SHOW ALL Sort by Start Date Order Ascending Descending 3 results Case study 5 July 2010 00:00 UTC Dust squalls over central Sahel On 5 July 2010, Meteosat-9 observed a well organised mesoscale convective system over the central Sahel,. Case study 9 June 00:00–10 June 10:00 UTC Large dust squall over Niger, Mali & Algeria On 9 June, convection lifts part of the low-lying dust higher up. Case study 18 March 2010 00:00 UTC Continental-scale dust outbreak over Africa According to the NASA Earth Observatory, March 2010 was a spectacular month for dust outbreaks.