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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 16 October 2026

Today Tonight and Saturday.

Strong wind warning in effect.

Wind southwest 20 knots veering to west 20 this morning then to northwest 20 this afternoon. Wind increasing to north 30 this evening then diminishing to north 20 Saturday morning. Wind diminishing to northwest 15 near noon Saturday and to west 10 Saturday afternoon. Wind increasing to southwest 15 Saturday evening.

Scattered showers ending Saturday morning. Risk of thunderstorms early this morning.

Waves

Issued 03:00 AM EDT 16 October 2026
Today Tonight and Saturday. Waves 0.5 metres or less building to 0.5 to 1 this evening then subsiding to 0.5 or less Saturday morning.

Extended Forecast

Issued 03:00 AM EDT 16 October 2026
Sunday Wind southwest 15 knots diminishing to light late in the day.
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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land station Land Station
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

Warnings (In effect)

Strong wind warning in effect

Lake St. Clair

Issued 03:00 AM EDT 16 October 2026

'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.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 16 October 2026 Today Tonight and Saturday At 3:00 a.m. EDT today low 1004 mb located over western Lake Huron.
By 3:00 a.m. EDT Saturday low 990 mb located over New Brunswick.

At 3:00 a.m. EDT today ridge located on a line north-south over
Montana.
By 3:00 a.m. EDT Saturday ridge located on a line
northeast-southwest over Wisconsin.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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