Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Filter by Categories Satellites Weather Tags GOES Date 2013 Date May 1 result Sort by Start Date Order Ascending Descending Sort Monday, 20 May 2013 20 May 20:38 UTC–21 May 2013 00:50 UTC EUMETSAT Science Blog Supercell Thunderstorm near Denver On 20 May GOES-14 tracked an isolated supercell thunderstorm which developed near Denver, then moved eastwards over the High Plains.