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 Ocean Data Weather Meteosat Tags SEVIRI Africa Atlantic Ocean Indian Ocean Date 2020 Date December SHOW ALL Sort by Start Date Order Ascending Descending 1 result Case study 25 December 2020 00:00 UTC-2 January 2021 09:00 UTC Chalane crosses southern African subcontinent Tropical Storm Chalane landfall in Madagascar and Mozambique, then the entire South African subcontinent.