In this case, the arrowed storm exhibits both: uniform increase of the 3.7 µm reflectivity above its entire top (ch3enh), as well as the "cold-U" in the enhanced channel 4 image (ch4enh). Notice that also the other storms in arrowed storm's vicinity show similar increase of the 3.7 µm reflectivity, however no trace of anything resembling a "cold-U" in the ch4enh image. Also part of the larger system to the east (over Belorussia) displays increased reflectivity, with no obvious link to the thermal IR field.