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Wave Height Forecasts for the Great Lakes and St. Lawrence River (On)


* NOTE: Corrected and/or amended bulletins are listed first *

 
FQCN23 CWTO 182230
Wave height forecasts for the Canadian portion of the Great Lakes
issued by Environment Canada at 6:30 p.m. EDT Friday 18 April 2025
for tonight and Saturday.
The next scheduled forecast will be issued at 3:00 a.m. EDT Saturday.

Wave heights are for offshore and are forecast from trough to crest.
Nearshore waves may vary considerably due to shoreline effects.

Western Lake Superior.
Waves 0.5 to 1 metre subsiding to 0.5 or less near noon Saturday.

Eastern Lake Superior.
Waves 0.5 to 1 metre building to 1 to 1.5 late overnight then
subsiding to 0.5 to 1 Saturday evening.

Whitefish Bay.
Over open water waves 0.5 metres or less building to 1 to 1.5 early
Saturday morning.

Northern Lake Huron.
Waves 1 to 1.5 metres building to 2 early Saturday morning and to 2
to 3 near noon Saturday.

Southern Lake Huron.
Waves 1 to 1.5 metres subsiding to 1 this evening becoming 2 Saturday
morning except 1 over southern sections. Waves subsiding to 1.5
Saturday evening.

Georgian Bay.
Waves 0.5 to 1 metre building to 1.5 Saturday morning.

Lake St. Clair.
Waves 0.5 to 1 metre subsiding to 0.5 or less early Saturday morning.

Western Lake Erie.
Waves 1 metre building to 1.5 late overnight then subsiding to 0.5 to
1 near noon Saturday.

Eastern Lake Erie.
Waves 1 metre building to 1.5 near midnight then subsiding to 0.5 or
less Saturday evening.

Western Lake Ontario.
Waves 0.5 to 1 metre subsiding to 0.5 or less near midnight then
building to 1 to 1.5 early Saturday morning. Waves subsiding to 1
Saturday evening.

Eastern Lake Ontario.
Waves 0.5 to 1 metre building to 1 to 1.5 early Saturday morning.

End
$$$$^^

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