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 Meteosat Metop Atmospheric Composition Weather Tags EPS VIIRS ASCAT AVHRR Meteosat Second Generation (MSG) SEVIRI Africa Asia Terra/Aqua SNPP MODIS Date 2015 Date April October SHOW ALL Sort by Start Date Order Ascending Descending 2 results Case study 28 October 2015 17:24 UTC–03 November 12:00 UTC Tropical Cyclone Chapala Tropical Cyclone Chapala was one of the strongest cyclones to ever hit Yemen. Case study 01 April 2015 23:00 UTC Spectrum of dust colours over Arabian Peninsula A dust storm formed rapidly over the Arabian peninsula on 1 April.