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 Europe SNPP VIIRS MSG SEVIRI Africa Date 2016 SHOW ALL Sort by Start Date Order Ascending Descending 1 result Case study 1 and 2 April 2016 12:00 UTC and 01:50 UTC Saharan dust causes temperature drop Europe saw a significant drop in temperatures due to a large cloud of Saharan dust.