Five departments placed on orange “flood” vigilance this Monday. Storm Pierrick, which arrived this afternoon on the coasts of Finistère, has led to the Breton department being placed onorange alert for submergence waves and violent winds.
“ Significant overflows during high tides on the Seine downstream ” are to be expected during the night from Monday to Tuesday “ due to high tidal coefficients, sea surges and significant flows of the Sein ”, as the map explains.