Wave Height Forecasts for the Great Lakes and St. Lawrence River (On)
* NOTE: Corrected and/or amended bulletins are listed first *
FQCN23 CWTO 100700 Wave height forecasts for the Canadian portion of the Great Lakes issued by Environment Canada at 3:00 a.m. EDT Saturday 10 October 2026 for today tonight and Sunday. The next scheduled forecast will be issued at 10:30 a.m. EDT. 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 1.5 metres building to 2 to 3 near noon then subsiding to 1.5 near midnight. Waves subsiding to 1 Sunday afternoon and to 0.5 or less Sunday evening. Eastern Lake Superior. Waves 1 metre building to 1.5 early this morning and to 2 to 3 near noon. Waves subsiding to 1.5 Sunday morning and to 1 Sunday evening. Whitefish Bay. Waves 0.5 metres building to 1 this morning then subsiding to 0.5 or less Sunday evening. Northern Lake Huron. Waves 1.5 to 2 metres. Southern Lake Huron. Waves 0.5 metres building to 1 this morning and to 1.5 early this evening. Waves subsiding to 0.5 to 1 Sunday morning. Georgian Bay. Waves 0.5 metres building to 1.5 near noon and to 2 early this evening. Waves subsiding to 1 Sunday morning and to 0.5 Sunday afternoon. Lake St. Clair. Waves 0.5 metres or less. Western Lake Erie. Waves 0.5 metres or less building to 1 near midnight then subsiding to 0.5 or less near noon Sunday. Eastern Lake Erie. Waves 0.5 metres or less building to 0.5 to 1 this evening then subsiding to 0.5 or less near noon Sunday. Western Lake Ontario. Waves 0.5 metres or less building to 1 to 1.5 this afternoon then subsiding to 0.5 near midnight. Eastern Lake Ontario. Waves 0.5 metres or less building to 0.5 to 1 overnight then subsiding to 0.5 or less Sunday afternoon. End $$$$^^
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