FICN19 CWIS 231545 Ice forecasts for the Great Lakes issued by Environment Canada at 12:00 P.M. EDT Monday 23 March 2026 for today tonight and Tuesday. The next scheduled forecasts will be issued at 12:00 P.M. Tuesday. Western Lake Superior. 1 tenth thick lake ice except 9 tenths thin lake ice including 4 tenths thick lake ice along parts of the shores. Consolidated thick lake ice in Thunder Bay and along parts of the southern shore. Consolidated very thick lake ice in Black Bay and Nipigon Bay. Eastern Lake Superior. 1 tenth thick lake ice except 7 tenths thin lake ice including 3 tenths thick lake ice along parts of the shores and in Keweenaw Bay. Consolidated thick lake ice along parts of the southern shore. Whitefish Bay. 8 tenths thick lake ice. Consolidated thick lake ice in the southern and eastern sections. North Channel. Consolidated thick lake ice. Northern Lake Huron. 1 tenth thick lake ice except 9 tenths thin lake ice including 2 tenths thick lake ice in the extreme northwestern section. 7 tenths thick lake ice near parts of the Bruce Peninsula. Consolidated thick lake ice along parts of the shore and near the Straits of Mackinac. Southern Lake Huron. Open water except 2 tenths thick lake ice in Saginaw Bay. 7 tenths thick lake ice along parts of the eastern shore. Consolidated thick lake ice along parts of the northeastern shore. Northern Georgian Bay. 8 tenths thick lake ice. Consolidated thick lake ice along parts of the shore. Southern Georgian Bay. 1 tenth thick lake ice except 6 tenths thick lake ice in the northern section. Consolidated thick lake ice along parts of the shore. Lake St. Clair Western Lake Erie. Open water. Eastern Lake Erie. 1 tenth thick lake ice except 9 tenths thick lake ice in the extreme eastern section. Consolidated thick lake ice along parts of the eastern shore. Western Lake Ontario. Open water. Eastern Lake Ontario. Open water except 2 tenths thick lake ice in the extreme northeastern section. Consolidated rotten thick lake ice along parts of the shore and in the Bay of Quinte. Northern Lake Michigan. Open water except 1 tenth thick lake ice near Green Bay. 8 tenths thick lake ice north of and east of Fox Islands. Consolidated thick lake ice in the Straits of Mackinac. Southern Lake Michigan. Open water. Green Bay. 7 tenths thick lake ice. Consolidated thick lake ice in Bays de Noc and in southern Green Bay. The Lake Michigan ice description has been prepared by the U.S. National Ice Center. The Great Lakes ice alerts are issued by the Canadian Ice Service. End