Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Meteosat Atmospheric composition Weather Data Tags SEVIRI Africa MSG Date 2010 Date July SHOW ALL Sort by Start Date Order Ascending Descending 1 result 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,.