Fears are mounting in parts of Brittany that high tide on Friday evening could cause yet more flooding in a region already hit by high winds and heavy rain this week.
The departments of Morbihan and Ille-et-Vilaine had also been on orange alert until the threat level was lifted on Thursday evening, while the department of Finistère had its warning raised to red, the highest available.
It is set to remain in place until Saturday at the earliest.
In the town of Quimperlé, streets were badly flooded, roads blocked and some 50 businesses and homes badly affected by water levels of up to 1.5 metres, according to French TV TF1.
With the river Laïta overflowing, flood levels on the streets of the coastal town reached a peak of 4.7 metres on Thursday, but local authorities are particularly concerned about the potential for damage when a persistent "high tidal coefficient" combines with high tide on the Atlantic coast at around 6.15 pm on Friday.
The neighbouring towns of Morlaix, Quimper Chateaulin, and Landerneau were also hit by flooding, though to a lesser extent than Qumperlé, according to TF1.
A woman aged in her 50s was killed in nearby Morbihan on Wednesday, when a tree uprooted by strong winds fell on the car in which she was a passenger, French TV TF1 reported.
At Trinité-sur-Mer, in the department of Morbihan, waves battered the Atlantic coast on Thursday with enough force, in one case, to beat back a parked car, as seen in this video.