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Marine Forecast

Issued 10:30 AM EST 11 December 2025

Today Tonight and Friday.

Wind west 15 knots diminishing to southwest 10 late overnight. Wind southwest 10 Friday.

Scattered flurries ending near midnight.

Extended Forecast

Issued 03:00 AM EST 11 December 2025
Saturday Wind light becoming southwest 15 knots in the morning then diminishing to light late in the day.
Sunday Wind light becoming northwest 15 knots.
Monday Wind light.

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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.

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Synopsis

Technical Marine Synopsis

Issued 10:30 AM EST 11 December 2025 Today Tonight and Friday At 10:30 a.m. EST today departing low 986 mb located over
southeastern Quebec.

At 10:30 a.m. EST today ridge located on a line north-south over
the Ontario - Manitoba border.
By 10:30 a.m. EST Friday ridge located on a line north-south
over Minnesota.

By 10:30 a.m. EST Friday approaching trough located on a line
north-south over the Ontario - Manitoba border.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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