Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Satellites Atmospheric Composition Weather Meteosat Tags SEVIRI SNPP VIIRS Meteosat Second Generation (MSG) Africa Europe Asia S America Date 2016 Date March April August December SHOW ALL Sort by Start Date Order Ascending Descending 4 results Case study 24 December 2016 03:00 UTC–4 January 2017 03:00 UTC Lingering fog over the Arabian Peninsula From 24 December and for more than 10 days, a thick fog invaded the Arabian Gulf countries resulting in limited night-morning visibility. Case study 18–28 August 2016 Smoke over parts of South America In August 2016 partially dense smoke veils covered extended areas of South America. The smoke was due to natural and man-made wildfires. Case study 12 April 2016 00:00 UTC–18 April 13:30 UTC Tropical Cyclone Fantala Tropical Cyclone Fantala showed a very clearly defined eye as the storm reached Category 5 level in mid-April. Case study 22 March 2016 00:00 UTC–24 March 06:00 UTC Cyclone Ivan brings massive dust storm Cyclone Ivan brought an impressive low that carried huge amounts of dust to parts of Europe at the end of March.