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 Data Meteosat Tags MSG Africa SEVIRI Terra/Aqua MODIS Date 2007 SHOW ALL Sort by Start Date Order Ascending Descending 2 results Case study 30 April 2007 00:00 UTC Dust outflow boundary over Sudan The MSG image shows a large night-time dust squall over Sudan on 29 April 2007. Case study 5 April 2007 00:00 UTC Severe thunderstorm in polluted air over Burkina Faso Isolated thunderstorm developed rapidly southwest of Ouagadougou, Burkina Faso.