Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Meteosat Metop Weather Data Tags MSG SEVIRI AVHRR Metop-A Metop-B Europe SNPP VIIRS Date 2013 SHOW ALL Sort by Start Date Order Ascending Descending 1 result Case study 6 November 2013 10:30–14:30 UTC Distrails over Central Europe A distrail, short for dissipation trail, forms when an aircraft flies through a supercooled cloud.