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30.04.2025
In the Bay of Bothnia, there is 20–70 cm thick, partly rotten fast ice in the northern archipelagos. Off the fast ice in the north, there is locally 10–50 cm thick, close ice and else very open ice. Further south at sea in the northeast, there is up to 50 cm thick, very close and partly ridged and rafted ice. Else at sea it is ice-free.