'Ball' shaped cloud is recorded in Serra do RS; understand the phenomenon A "ball" shaped cloud caught attention in Guaporé, in the Serra do Rio Grande do Sul. The record was made this Sunday afternoon (19) by resident Suzete Assis. According to Climatempo Meteorologia, it is a cumulonimbus cloud, a meteorological formation that is associated with the occurrence of storms. ? Access the g1 RS channel on WhatsApp ?? The name cumulunimbus is the combination of the Latin words cumulus, which means heap, and nimbus, which means rain. Climatempo explains that the unusual shape, which resembles a ball, is caused by hot air currents. When rising, these currents help in the formation of the cloud and cause the rounded characteristic. 'Ball' shaped cloud is recorded in Serra do RS Suzete Assis/personal archive VIDEOS: Everything about RS