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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 14 November 2025

Today Tonight and Saturday.

Wind light becoming northeast 10 to 15 knots Saturday evening.

Freezing rain Saturday evening. Fog patches dissipating this morning. Visibility 1 mile or less in fog patches and as low as 1 mile in freezing rain.

Temperatures minus 1 falling to minus 3 near midnight.

Extended Forecast

Issued 06:00 AM EST 14 November 2025
Sunday Wind northeast 15 knots increasing to west 15 to 25 in the morning.
Monday Wind west 15 to 25 knots.
Tuesday Wind west 15 to 25 knots.

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Map of Great Lakes - Lake Huron marine weather areas Cove Island Goderich Oshawa Executive Airport CFB Trenton Western Islands Wiarton Airport Point Petre Lake Simcoe Regional Airport Parry Sound Harbour Toronto City Centre Airport Muskoka Airport Lagoon City Brockville Hamilton Munro Int'l Airport Sarnia Chris Hadfield Airport Tobermory Cobourg Harrow AAFC Long Point Port Weller Burlington Lift Bridge St. Catharines / Niagara District Airport Southeast Shoal Point Pelee Vineland Station Welland-Pelham Erieau Windsor Airport Port Colborne Killarney South Georgian Bay - 45143 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Lake St Clair - 45147 South Lake Huron - 45149 Sault Ste. Marie Airport Lake Simcoe - 45151 Collingwood Greater Sudbury Airport North Bay Airport Kingston Airport Peterborough Municipal Airport Grenadier Island Port Colborne - 45142 Great Duck Island Ajax - 45159 Gore Bay-Manitoulin Airport North Channel - 45154 Lake Nipissing - 45152
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Ice Conditions

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EST 14 November 2025 Today Tonight and Saturday At 3:00 a.m. EST today low 990 mb located over Newfoundland.
By 7:00 p.m. EST Saturday low 988 mb located south of Labrador.

At 3:00 a.m. EST today ridge located from the Great Lakes to
Labrador.
By 7:00 p.m. EST Saturday ridge located on a line north-south over
Lake Saint-Jean.

At 7:00 a.m. EST Saturday low 995 mb located near Lake Superior.
By 7:00 p.m. EST Saturday low 987 mb located near Lake Huron.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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