It snowed on Wednesday evening in Brest, March 27!. This downpour was not expected.
It results from a phenomenon called isothermy and which allows, under certain conditions, no snow to fall. The phenomenon is quite exceptional at this date. It is already quite rare, even if it is not at all a new phenomenon, for flakes to fall by the sea or ocean because the immediate proximity of the body of water tends to warm the atmosphere. Where the situation is more remarkable is that the snow shower occurred on March 27.