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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 08 November 2025

Tonight and Sunday.

Strong wind warning in effect.

Wind northeast 10 knots increasing to northeast 15 late overnight and to northeast 20 Sunday morning. Wind backing to north 20 near noon Sunday then diminishing to north 15 Sunday evening.

Periods of rain changing to periods of snow or rain Sunday morning.

Waves

Issued 06:30 PM EST 08 November 2025
Tonight and Sunday. Waves 0.5 metres or less building to 0.5 to 1 near noon Sunday.

Extended Forecast

Issued 06:30 PM EST 08 November 2025
Monday Wind north 15 knots increasing to north 20 in the morning.
Tuesday Wind west 20 knots.
Wednesday Wind southwest 25 knots.

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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

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Lake St. Clair

Issued 6:30 PM EST 08 November 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 6:30 PM EST 8 November 2025 Tonight and Sunday At 6:30 p.m. EST tonight quasi-stationary ridge located on a line
east-west over northern Ontario.

At 6:30 p.m. EST tonight low 1007 mb located over southwestern
Illinois.
By 6:30 p.m. EST Sunday low 1006 mb located over eastern New
York State.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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