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

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Marine Weather for Canada

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