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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 08 May 2025

Tonight and Friday.

Strong wind warning in effect.

Wind light increasing to northeast 10 to 15 knots early this evening and to northeast 15 to 25 late overnight. Wind diminishing to northeast 10 to 15 Friday evening.

Periods of rain overnight and Friday.

Extended Forecast

Issued 06:00 PM EDT 08 May 2025
Saturday Wind northeasterly 15 knots backing to northwesterly 15 in the afternoon.
Sunday Wind north 15 to 25 knots diminishing to northerly 10 to 15.
Monday Wind southwest 15 to 25 knots diminishing to light late in the day.

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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 11:22 PM EDT 08 May 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 PM EDT 8 May 2025 Tonight and Friday At 3:00 p.m. EDT today trough located on a line northeast-southwest
over New Brunswick.
By 2:00 a.m. EDT Friday weakening trough located on a line
northeast-southwest over Nova Scotia.

At 3:00 p.m. EDT today ridge located on a line northeast-southwest
over southern James Bay.
By 8:00 p.m. EDT Friday ridge located on a line east-west over
Anticosti Island.

At 3:00 p.m. EDT today trough located on a line north-south over
Trois-Rivières.
By 8:00 p.m. EDT Friday trough located on a line north-south
over Montréal.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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