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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 22 May 2025

Today Tonight and Friday.

Wind southeasterly 10 to 15 knots increasing to southeasterly 15 to 20 this morning then diminishing to southeasterly 10 to 15 this evening. Wind backing to northeast 15 Friday morning then diminishing to light Friday evening.

Showers ending near midnight. Periods of rain Friday.

Extended Forecast

Issued 06:00 AM EDT 22 May 2025
Saturday Wind northeast 15 knots diminishing to light in the afternoon.
Sunday Wind light becoming northerly 10 to 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.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 22 May 2025 Today Tonight and Friday At 3:00 a.m. EDT today ridge located on a line north-south over
Gaspé.
By 8:00 p.m. EDT Friday ridge located on a line northwest-southeast
over Labrador Coast.

At 3:00 a.m. EDT today low 1002 mb located over Lake Erie.
By 8:00 p.m. EDT Friday low 1004 mb located near the Bay of Fundy.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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