Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Data Meteosat Atmospheric composition Weather Tags Africa Terra/Aqua MSG SEVIRI MODIS 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.