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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 22 April 2025

Today Tonight and Wednesday.

Wind southeast 15 knots increasing to southwest 20 to 30 early this morning then diminishing to light this evening. Wind becoming west 15 Wednesday morning then diminishing to light Wednesday evening.

Scattered showers ending near noon.

Extended Forecast

Issued 06:00 AM EDT 22 April 2025
Thursday Wind light.
Friday Wind northeast 10 to 15 knots.
Saturday Wind northeast 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 EDT 22 April 2025 Today Tonight and Wednesday At 3:00 a.m. EDT today ridge located from Ungava Bay to Nova Scotia.
By midnight EDT tonight departing ridge located on a line
north-south over Newfoundland.

At 3:00 a.m. EDT today low 1001 mb located over western Quebec.
By 8:00 p.m. EDT Wednesday weakening low 1015 mb located near
Nova Scotia.

At 8:00 p.m. EDT Wednesday approaching ridge located from Hudson
Bay to Lake Ontario.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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