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 ASCAT AVHRR MFG MVIRI Metop Asia Date 2015 Date January SHOW ALL Sort by Start Date Order Ascending Descending 1 result Case study 26 January 2015 00:00 UTC–1 February 18:00 UTC Twin tropical storms Eunice and Diamondra At the end of January a pair of tropical depressions developed in the Southern Indian Ocean.