Welcome to the Baltic Sea Ice Service

30.04.2024

In the Bay of Bothnia there is rotten or rotting fast ice in the archipelagos, up to 80 cm thick in the north and up to 50 cm thick in the south. At sea in the western part there is 20–70 cm thick, very close, ridged ice. In the southwestern part is close, 15–60 cm thick drift ice. At sea in the east there is open water with thicker floes at places. In the Quark there is rotten fast ice at the coasts and at sea there is very open to close, 10–50 cm thick ice and open water. At the coasts of the northern Sea of Bothnia there is rotten ice in places.