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 Data Meteosat Weather Tags SEVIRI Africa Terra/Aqua MODIS MSG 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 Isolated thunderstorm developed rapidly southwest of Ouagadougou, Burkina Faso.