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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 23 June 2025

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind light increasing to southwest 15 to 25 knots early this afternoon then becoming west 15 Tuesday morning.

Extended Forecast

Issued 06:00 AM EDT 23 June 2025
Wednesday Wind northeast 10 to 15 knots.
Thursday Wind northeast 10 to 15 knots.
Friday 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

Warnings (In effect)

Strong wind warning in effect

Cornwall to Montréal

Issued 04:22 AM EDT 23 June 2025

'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 AM EDT 23 June 2025 Today Tonight and Tuesday At 3:00 a.m. EDT today warm front located on a line east-west over
northwestern Ontario.
By 8:00 a.m. EDT Tuesday warm front located on a line
northwest-southeast over Anticosti Island.

At 8:00 p.m. EDT tonight trough located from James Bay to Lake
Michigan.
By 8:00 p.m. EDT Tuesday weakening trough located from the Strait
of Belle Isle to Cape Cod.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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