Torrential rain hit Catalonia from 20:00 on Saturday, 3 October 2026, causing widespread disruption. Barcelona saw rainfall exceed 100 litres per square metre, with the Zona Universitaria station recording 102.8 litres in two hours and El Prat seeing 77.9.
The Generalitat restricted mobility across 20 counties as flooding struck infrastructure. Water leaked from ceilings at Sants station and into hospitals, while the C-32 highway closed at kilometre 61.5. In L'Hospitalet, floodwaters moved heavy containers.
River levels surged dangerously, with the Llobregat basin at Sant Joan Despi reaching 165 cubic metres per second, fifteen times its morning flow. At Sant Quinti de Mediona, volumes hit 230 cubic metres per second, posing a severe risk to the entire region.