Marine Synopsis for the Great Lakes and St. Lawrence River (On)
* NOTE: Corrected and/or amended bulletins are listed first *
FQCN10 CWTO 072230 Technical marine synopsis for the Canadian portion of the Great Lakes and the Ontario portion of the St. Lawrence River issued by Environment Canada at 6:30 p.m. EDT Sunday 7 June 2026 for tonight and Monday. The next scheduled synopsis will be issued at 3:00 a.m. EDT Monday. Systems position. At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest over northeastern Ontario. By 6:30 p.m. EDT Monday ridge located on a line north-south over Quebec. End
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