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 Meteosat Land Weather Sentinel Tags NOAA SNPP Meteosat Second Generation (MSG) SEVIRI Third Party Sentinel-3 Europe Terra/Aqua VIIRS Date 2021 Date February June SHOW ALL Sort by Start Date Order Ascending Descending 2 results Case study 21 June 2021, 00:00-23:45 UTC Storm Ahti causes damage in northern Finland On 21 June 2021 Storm Ahti caused widespread damage and flooding in northern Finland. Case study 16-28 February and 2-11 March 2021 Mount Etna very active in February & March 2021 Regular Etna eruptions observed in February and March 2021.