Tornadic Thunderstorm over eastern Colorado
GOES-14 Visible Imagery (0.626 µm) animation, 1708 UTC 27 May 2015 – 0059 UTC 28 May 2015 [click to play very very large animation]
The NOAA/CIMSS ProbSevere output for this storm is shown below. ProbSevere increased above 50% at 1904 UTC. The satellite information for the storm object was derived from GOES-13 data between 1730 and 1745 UTC, when strong growth occurred, and from 1745-1815 UTC when weak glaciation occurred (how the reduced time resolution at that time, when GOES-13 is scanning a full-disk image, affected the Glaciation estimates is not certain — ‘weak’ is probably a lower bound).