FICN19 CWIS 311645
Ice forecasts for the Great Lakes issued by Environment Canada at
12:00 P.M. EST Wednesday 31 December 2025 for today tonight and
Thursday.
The next scheduled forecasts will be issued at 12:00 P.M. Thursday.

Western Lake Superior.
Open water except 7 tenths thin lake ice along parts of the shore.
Consolidated medium lake ice including 2 tenths thick lake ice in
Black Bay, Chequamegon Bay, and Nipigon Bay. 

Eastern Lake Superior.
Open water. 

Whitefish Bay.
Open water except 4 tenths thin lake ice along parts of the shore. 

North Channel.
2 tenths thin lake ice. Consolidated medium lake ice along parts of
the shore and in the St. Marys River. 

Northern Lake Huron.
Open water except 7 tenths new lake ice including 3 tenths thin lake
ice along parts of the shore. Consolidated thin lake ice including 2
tenths medium lake ice along parts of the shore. 

Southern Lake Huron.
Ice pressure warning in effect.
Open water except 5 tenths new lake ice including 2 tenths thin lake
ice along parts of the shore. 9 tenths thin lake ice including 4
tenths medium lake ice in Saginaw Bay. Consolidated medium lake ice
along parts of the shore. 
Strong ice pressure along parts of the Saginaw Bay shores today and
continuing Thursday.

Northern Georgian Bay.
Open water except 8 tenths thin lake ice along the northern shore.
Consolidated thin lake ice including 2 tenths medium lake ice along
parts of the shore. 

Southern Georgian Bay.
Open water except 7 tenths thin lake ice along parts of the shore.
Consolidated thin lake ice including 2 tenths medium lake ice in
Severn Sound. 

Lake St. Clair.
4 tenths new lake ice including 1 tenth thin lake ice except 7
tenths thin lake ice in the eastern section. Consolidated thin lake
ice including 2 tenths medium lake ice in the extreme eastern
section. 

Western Lake Erie.
Open water except 5 tenths new lake ice including 2 tenths thin lake
ice in the western section. 

Eastern Lake Erie.
Open water except 2 tenths new lake ice along parts of the shore. 7
tenths new lake ice including 3 tenths thin lake ice in Long Point
Bay. 

Western Lake Ontario.
Open water. 

Eastern Lake Ontario.
Open water except 3 tenths new lake ice including 1 tenth thin lake
ice along parts of the shore. Consolidated medium lake ice in
sheltered bays and in the Bay of Quinte. 

Northern Lake Michigan.
Open water except 9 tenths thin lake ice including 2 tenths medium
lake ice along the northern shore and in the Straits of Mackinac. 

Southern Lake Michigan.
Open water. 

Green Bay.
2 tenths new lake ice except 7 tenths medium lake ice south of
Marinette. Consolidated medium lake ice in Bays de Noc and southern
Green Bay. 

The Lake Michigan ice description has been prepared by the U.S.
National Ice Center.

The Great Lakes ice warnings are issued by the Canadian Ice Service.

End