Orange Flood Alert Issued for La Laïta River Basin in Brittany Amid Heavy Rainfall

On February 7, 2026, an orange flood alert was declared for the La Laïta river basin in Brittany, particularly impacting the Finistère and Morbihan departments. This alert follows significant rainfall overnight from Friday to Saturday, causing rapid rises in water levels, especially in the Ellé river at Arzano, which is expected to peak between 8 PM and 11 PM Saturday.

Despite decreasing tide coefficients—dropping from 73 in the morning to 66 in the afternoon—the combination of heavy river inflows and significant surcharges is anticipated to result in notable flooding in both riverine and maritime areas within the basin. Vigilcues and Météo France highlight that all waterways are responding to the precipitation, with La Laïta being a particular concern.

Authorities have warned of difficult driving conditions throughout the road network and potential rail disruptions. Underground locations, such as parking garages, face elevated flood risks. The prefect of Finistère, Louis Le Franc, urged residents to remain vigilant, avoid traveling on partially submerged roads, secure belongings in flood-prone zones, and consistently check official weather updates.

The prefect of Morbihan also stressed caution around watercourses and urged the public to respect safety signs and avoid activities near flooded areas. Both prefectures are closely monitoring the evolving situation and stand ready to enact further protective measures if required.