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 Data Satellites Land Ocean Weather Meteosat Tags SEVIRI Meteosat Second Generation (MSG) Africa Atmosphere Europe Asia Atlantic Ocean Indian Ocean Date 2020 Date September November December SHOW ALL Sort by Start Date Order Ascending Descending 5 results 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 in December 2020 then crossed the entire South African subcontinent. Case study 21 December 2020 09:00-22 December 03:00 UTC and 18 January 2021 21:15 UTC Strong Etna eruptions seen by Meteosat Mount Etna erupted several times in December 2020 and January 2021. Case study 25 November 2020 00:00 UTC-27 November 09:00 UTC Anticyclone with very dry air in mid troposphere During last week of November 2020, a very stable anticyclone formed over central Europe. Case study 21 November 2020 12:00 UTC-23 November 12:00 UTC Tropical Cyclone Gati historic landfall in Somalia Tropical Cyclone Gati was the strongest tropical cyclone on record to make landfall in Somalia, in late November 2020. Case study 30 September 2020 09:00 UTC and 3 October 00:00 UTC Large dust clouds over northern Europe Largest European-made dust clouds ever seen in Meteosat imagery in autumn 2020.