Storm Blas was a small extratropical cyclone and Mediterranean tropical-like cyclone that caused devastation and disruption across the Balearic Islands, Spain, France, and Italy during early and mid-November 2021. The storm was named by Agencia Estatal de Meteorología (AEMET) on 5 November, with the agency issuing wind and rain alerts to the Balearic archipelago and other areas reaching the eastern coasts of Spain, as Blas approached from the east. It then turned eastward after moving slowly westward, and the storm meandered across the western Mediterranean for the next several days, before eventually dissipating to the west of Italy on 18 November.