ice forecasts for the Great Lakes issued by Environment Canada at
12:00 p.M. EDT Saturday 20 March 2010 for today tonight and Sunday.
The next scheduled forecasts will be issued at 12:00 p.M. Sunday.
Western Lake Superior.
Ice pressure warning in effect.
Ice free except patches of 9 tenths of rotten medium lake ice along
portions of the southwestern shore. 9 to 10 tenths of thick lake ice
in Thunder Bay except open water over the northwestern section.
Strong ice pressure developing overnight in the pack ice over the
eastern section of Thunder Bay and easing Sunday evening.
Eastern Lake Superior.
Ice free except patches of 9 to 10 tenths of rotten medium lake ice
along portions of the southern shore.
Whitefish Bay.
Open water except 9 tenths of rotten thick lake ice over the southern
section.
North Channel.
2 tenths of rotten thick lake ice except 9 to 10 tenths of rotten
thick lake ice in the eastern and western sections.
Northern Lake Huron.
Ice free except 9 tenths of rotten medium lake ice including 3 tenths
of rotten thick lake ice south of Bois Blanc Island.
Southern Lake Huron.
Ice free except patches of 9 tenths of rotten thick lake ice within
10 to 15 miles of Sarnia and over the eastern section of Saginaw Bay.
Georgian Bay.
Open water except patches of 7 tenths of rotten medium lake ice in
the southern portion of the Bay east of wiarton. 9 to 10 tenths of
rotten thick lake ice along the northeast Shore.
Lake St. Clair.
Open water.
Western Lake Erie.
Open water except patches of 8 tenths of rotten thick lake ice along
the southern shore.
Eastern Lake Erie.
Open water except 9 tenths of rotten thick lake ice within 5 to 10
miles of the southern shore west of Dunkirk.
Lake Ontario.
Ice free except 2 tenths of rotten thick lake ice in the Bay of
Quinte.
Northern Lake Michigan.
Open water except patches of 7 tenths of rotten medium lake ice
including 3 tenths of rotten thick lake ice within The Straits of
Mackinac and Little Traverse Bay.
Southern Lake Michigan.
Open water except 9 to 10 tenths of rotten thin lake ice including 4
tenths of rotten medium lake ice along the southeastern shore from
east of Gary to Michigan City.
Green Bay.
Patches of 8 tenths of rotten thick lake ice west and southwest of
Washington Island except consolidated rotten thick lake ice in the
bays de noc and southern portions of Green Bay south of Chambers
Island.
The Lake Michigan ice description has been prepared by the U.S.
National Ice Center.
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