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Government of Canada / Gouvernement du Canada

Marine Synopsis for the Great Lakes and St. Lawrence River (On)


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

 
FQCN10 CWTO 190700
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 Thursday 19 March 2026 for
today tonight and Friday.
The next scheduled synopsis will be issued at 10:30 a.m. EDT.

Systems position.
At 3:00 a.m. EDT today low 1010 mb located over northeastern
Ontario.
By 3:00 a.m. EDT Friday departing low 1013 mb located over Quebec.

At 3:00 a.m. EDT today ridge located on a line north-south over
eastern Manitoba.
By 3:00 a.m. EDT Friday ridge located on a line north-south over
eastern Ontario.

By 3:00 a.m. EDT Friday low 1005 mb located over northwestern
Ontario.

End

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