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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 10 March 2026

Tonight and Wednesday.

Wind northeast 10 knots becoming variable 10 near midnight then increasing to southwest 20 near noon Wednesday. Wind veering to northwest 20 Wednesday evening.

Showers or scattered flurries with a risk of thunderstorms.

Waves

Issued 06:30 PM EDT 10 March 2026
Tonight and Wednesday. Mainly ice covered.

Extended Forecast

Issued 06:30 PM EDT 10 March 2026
Thursday Wind northwest 20 knots diminishing to light late in the day.
Friday Wind south 15 knots increasing to west 35 late in the day.
Saturday Wind northwest 20 knots backing to southwest 15.

Ice Forecast*

Issued 12:00 PM EDT 10 March 2026 Today Tonight and Wednesday Open water except 9 tenths medium lake ice in the northeastern section.

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

 

[ Canadian Ice Service ]

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

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

Ice Forecasts

Issued 12:00 PM EDT 10 March 2026 Today Tonight and Wednesday

Ice Coverage

Open water except 9 tenths medium lake ice in the northeastern
section.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 10 March 2026 Tonight and Wednesday At 6:30 p.m. EDT tonight deepening low 996 mb located over Colorado.
By 6:30 p.m. EDT Wednesday deepening low 993 mb located over
southern Ontario.

At 6:30 p.m. EDT tonight departing high 1033 mb located east of
James Bay.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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