Simplified ice chart and reference charts

Normal situation Previous ice map Ice map of the previous year Icebreakers

Icebreakers

FINNISH ICE REPORT 19.01.2018

In the northern Bay of Bothnia at the ice edge, there is a brash ice barrier difficult to force.

In the northern Bay of Bothnia there is 20-40 cm thick fast ice in the inner archipelago. Farther out 10-30 cm thick very close ice to Kemi 2. At the ice edge there is a brash ice barrier, difficult to force. Farther out new ice and thin close ice to the line approximately Malören - Nahkiainen.

In the southern Bay of Bothnia and the Quark there is 10-25 cm thick fast ice in the archipelago. Farther out thin very open ice and new-ice formation.

In the Sea of Bothnia and Gulf of Finland new ice in the inner archipelago. Farther out new-ice formation.

Icebreakers: Kontio and Otso assist in the Bay of Bothnia.

Restrictions to navigation: Minimum ice class and deadweight required of assisted vessels:
Tornio, Kemi and Oulu, IA and IB of more than 2000 tons or IC and II of more than 3000 tons.
Raahe, Kalajoki, Kokkola, Pietarsaari and Vaasa, I and II of more than 2000 tons.

Alterations to the restrictions: Minimum ice class and deadweight required of assisted vessels from 22th January:
Tornio, Kemi and Oulu, IA and IB of more than 2000 tons.

Vessels bound for Gulf of Bothnia ports in which traffic restrictions apply shall, when passing the latitude 60°00'N, report their nationality, name, port of destination, ETA and speed to ICE INFO on VHF channel 78. This report can also be given directly by phone +46 31 699 100.

Vessels bound for ports in the Bay of Bothnia shall report to Bothnia VTS on VHF channel 67 20 NM before Nordvalen lighthouse.

About the charts

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

  • jäätä: ice
  • haurasta: rotten ice

 

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