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 Data Meteosat Metop Tags MSG SEVIRI VIIRS AVHRR Africa Metop-A Europe Asia S America Terra/Aqua SNPP MODIS Date 2016 Date February March April June August December SHOW ALL Sort by Start Date Order Ascending Descending 6 results Case study 24 December 2016 03:00 UTC–4 January 2017 03:00 UTC Lingering fog over the Arabian Peninsula For more than 10 days in December, a thick fog covered the Arabian Gulf countries. 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. Case study 26 June 2016 03:00 UTC Gravity waves over the South Atlantic Interplay of atmospheric gravity waves over the South Atlantic off the African coast. 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. 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 carrying huge amounts of dust to parts of Europe. Case study 18 February 2016 12:00 UTC–22 February 00:00 UTC Unusual heavy snowfalls in the Canary Islands The snow started to fall on 18 February and continued to fall on 19 and 20 February.