Marine Synopsis for the Great Lakes and St. Lawrence River (On)
* NOTE: Corrected and/or amended bulletins are listed first *
FQCN10 CWTO 300700 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 3:00 a.m. EDT Wednesday 30 April 2025 for today tonight and Thursday. The next scheduled synopsis will be issued at 10:30 a.m. EDT. Systems position. At 3:00 a.m. EDT today departing trough located on a line northeast-southwest over eastern Ontario. At 3:00 a.m. EDT today high 1025 mb located over Lake Superior. By 3:00 a.m. EDT Thursday high 1024 mb located over western Quebec. By 3:00 a.m. EDT Thursday approaching low 1005 mb located over Missouri. End
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