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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 10 October 2026

Tonight and Sunday.

Wind southeast 15 knots diminishing to southeast 10 Sunday morning then backing to east 10 Sunday afternoon. Wind becoming light Sunday evening.

Periods of rain Sunday.

Waves

Issued 06:30 PM EDT 10 October 2026
Tonight and Sunday. Waves 0.5 metres or less.

Extended Forecast

Issued 06:30 PM EDT 10 October 2026
Monday Wind light becoming southwest 15 knots late in the day.
Tuesday Wind southwest 15 knots becoming north 15 late in the day.
Wednesday Wind north 15 knots diminishing to light.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Hamilton Munro Int'l Airport CFB Trenton Erieau Toronto City Centre Airport Point Pelee Peterborough Municipal Airport Burlington Lift Bridge Point Petre Cobourg Oshawa Executive Airport South Lake Huron - 45149 Port Colborne Brockville 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 Windsor Airport Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Welland-Pelham Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Sarnia Chris Hadfield Airport Vineland Station Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Tobermory
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 10 October 2026 Tonight and Sunday At 6:30 p.m. EDT tonight departing high 1032 mb located over
New Hampshire.

At 6:30 p.m. EDT tonight low 995 mb located over northwestern
Minnesota.
By 6:30 p.m. EDT Sunday low 1004 mb located over central Quebec.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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