Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Weather Data Meteosat Metop Tags SW Pacific Himawari AVHRR Third Party MTG Metop-A AHI Date 2017 Date May SHOW ALL Sort by Start Date Order Ascending Descending 1 result Case study 3 May 2017 20:20 UTC–8 May 06:20 UTC Severe Tropical Cyclone Donna Tropical Cyclone Donna was an out-of-season cyclone that broke records in May 2017.