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Marine Forecast

Issued 06:30 PM EST 11 December 2025

Tonight and Friday.

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

Scattered flurries this evening.

Extended Forecast

Issued 06:30 PM EST 11 December 2025
Saturday Wind light increasing to southwest 20 knots in the afternoon 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 Erie and Lake Ontario marine weather areas Harrow AAFC Burlington Lift Bridge Oshawa Executive Airport Point Pelee Peterborough Municipal Airport Point Petre Hamilton Munro Int'l Airport Erieau Cobourg Toronto City Centre Airport Port Colborne CFB Trenton South Lake Huron - 45149 Windsor Airport Great Duck Island Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Welland-Pelham Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Vineland Station Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Cove Island Goderich Sarnia Chris Hadfield Airport Western Islands Tobermory Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal
Legend:
buoy Buoy
land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 11 December 2025 Tonight and Friday At 6:30 p.m. EST tonight departing low 986 mb located over eastern
Quebec.

At 6:30 p.m. EST tonight ridge located on a line north-south over
northwestern Ontario.
By 6:30 p.m. EST Friday ridge located on a line north-south over
the Ontario - Quebec border.

At 6:30 p.m. EST tonight trough located on a line north-south
over Manitoba.
By 6:30 p.m. EST Friday trough located on a line north-south over
Lake Superior.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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