The ice in the Bay of Bothnia is melting rapidly.
In the northern Bay of Bothnia there is open water. At Kemi 1 there is a zone of 20-50 cm thick open drift ice.
The southern Bay of Bothnia is ice free.
Icebreakers: The icebreaking season has ended. No traffic restrictions.
The Saimaa Canal has been opened to traffic.
The ice chart of the whole Baltic Sea (pdf) is published in the autumn twice a week (Monday and Thursday) and daily when the amount of ice increases until until ice break-up in spring. It represents current ice situation, ice breaker positions and traffic restrictions in the Baltic Sea.
The simplified charts are updated once a week at the latest on Tuesday morning. The first one represents measured level ice thicknesses, ice coverage and sea surface temperature. The reference charts represent average, 1965 – 1986, ice situation on that day (= normaali), last week´s situation, last year´s situation and the positions of the ice breakers.
Explanation of chart's finnish words