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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 09 October 2026

Tonight and Saturday.

Strong wind warning in effect.

Wind westerly 15 to 25 knots diminishing to northwest 10 to 15 this evening and to light early Saturday morning. Wind becoming southeasterly 10 to 15 Saturday evening.

Scattered showers ending this evening with a risk of thunderstorms.

Extended Forecast

Issued 06:00 PM EDT 09 October 2026
Sunday Wind light increasing to southwest 15 to 25 knots in the afternoon.
Monday Wind southwest 10 to 15 knots.
Tuesday Wind northeast 10 to 15 knots.

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

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

Cornwall to Montréal

Issued 3:00 PM EDT 09 October 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EDT 9 October 2026 Tonight and Saturday At 3:00 p.m. EDT today intensifying ridge located on a line
northwest-southeast over the Great Lakes.
By 8:00 p.m. EDT Saturday ridge located on a line north-south over
Québec city.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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