@alexandre-Graziani These radars show these artefacts probably due to terrain or WiFi interferences https://community.windy.com/topic/8098/not-real-storm-bands?_=1607588609120 This is not a bug from Windy as the Meteorological Services from Spain AEMET which is the data source, display the same picture. [image: 1680588137054-bae92a08-3569-40cf-a67e-20cf3f33dbf4.jpeg]