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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 09 October 2026

Tonight and Saturday.

Wind southwest 10 knots becoming light this evening then becoming southeast 10 late overnight. Wind increasing to southeast 15 Saturday morning.

Waves

Issued 06:30 PM EDT 09 October 2026
Tonight and Saturday. Waves 0.5 metres or less building to 0.5 to 1 near noon Saturday.

Extended Forecast

Issued 06:30 PM EDT 09 October 2026
Sunday Wind southeast 15 knots diminishing to light in the morning.
Monday Wind light.
Tuesday Wind light.

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Map of Great Lakes - Lake Huron marine weather areas Erieau CFB Trenton Muskoka Airport Parry Sound Harbour Toronto City Centre Airport Lake Simcoe Regional Airport Wiarton Airport Point Petre Lagoon City Western Islands Cobourg Port Colborne Windsor Airport Point Pelee Welland-Pelham Vineland Station Burlington Lift Bridge Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Harrow AAFC Hamilton Munro Int'l Airport Tobermory Sarnia Chris Hadfield Airport Oshawa Executive Airport Collingwood Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Peterborough Municipal Airport Brockville Grenadier Island Kingston Airport
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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 9 October 2026 Tonight and Saturday At 6:30 p.m. EDT tonight ridge from 1023 mb high located on a line
northwest-southeast over southern Ontario.
By 6:30 p.m. EDT Saturday ridge from 1032 mb high located on a
line north-south over Vermont.

By 6:30 p.m. EDT Saturday approaching trough located on a line
northeast-southwest over North Dakota.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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