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Cornwall to Montréal

Forecast

Marine Forecast

Issued 03:00 PM EDT 15 May 2026

Tonight and Saturday.

Strong wind warning in effect.

Wind light increasing to southwest 10 to 20 knots near midnight and to southwest 20 to 30 Saturday morning.

Extended Forecast

Issued 06:00 AM EDT 15 May 2026
Sunday Wind southwest 15 to 25 knots becoming northwest 15 in the morning.
Monday Wind light.
Tuesday Wind light increasing to southwest 20 to 30 knots.

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

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EDT 15 May 2026 Tonight and Saturday At 3:00 p.m. EDT today low 1001 mb located off Nova Scotia.
By 8:00 p.m. EDT Saturday low 988 mb located off Newfoundland.

At 3:00 p.m. EDT today ridge located from the Great Lakes to
Labrador.
By 8:00 p.m. EDT Saturday ridge located from Cabot Strait to the
Strait of Belle Isle.

At 8:00 p.m. EDT Saturday approaching trough located on a line
northeast-southwest over northwestern Quebec.

Great Lakes - Lake Huron Area

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