Overview

• The warning covers 14 departments—Aisne, Aube, Eure-et-Loir, Loiret, Marne, Paris, Seine-et-Marne, Yvelines, Yonne, Essonne, Hauts-de-Seine, Seine-Saint-Denis, Val-de-Marne and Val-d’Oise—from 16 h Wednesday until 16 h Thursday.
• Météo-France predicts widespread rainfall accumulations of 40–60 mm with localized peaks reaching 80 mm during the alert period.
• Initial precipitation is expected to remain moderate through early evening before intensifying after 22 h as the cold drop moves into the region.
• Forecasters warn that heavy downpours could overwhelm urban drainage, causing significant surface runoff and localized flooding.
• Conditions are projected to ease by Thursday evening as the storm system shifts northeastward.