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 Terra/Aqua MODIS MSG SEVIRI Africa Date 2007 Date April SHOW ALL Sort by Start Date Order Ascending Descending 1 result Case study 5 April 2007 00:00 UTC Severe thunderstorm in polluted air over Burkina Faso On 5 April an isolated thunderstorm developed rapidly southwest of Ouagadougou, the capital of Burkina Faso.