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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 09 November 2025

Today Tonight and Monday.

Strong wind warning in effect.

Wind northeast 15 knots increasing to northeast 20 this morning then backing to north 20 near noon. Wind diminishing to north 15 early this evening then increasing to north 20 Monday morning. Wind diminishing to northwest 15 Monday afternoon.

Periods of rain changing to periods of snow or rain early this morning and ending near midnight. Flurries Monday morning. Scattered flurries Monday evening.

Waves

Issued 03:00 AM EST 09 November 2025
Today Tonight and Monday. Waves 0.5 metres or less building to 0.5 to 1 near noon.

Extended Forecast

Issued 03:00 AM EST 09 November 2025
Tuesday Wind west 20 knots.
Wednesday Wind southwest 25 knots.
Thursday Wind west 20 knots.

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Map of Great Lakes - Lake Huron marine weather areas Cove Island Goderich Oshawa Executive Airport CFB Trenton Western Islands Wiarton Airport Point Petre Lake Simcoe Regional Airport Parry Sound Harbour Toronto City Centre Airport Muskoka Airport Lagoon City Brockville Hamilton Munro Int'l Airport Sarnia Chris Hadfield Airport Tobermory Cobourg Harrow AAFC Long Point Port Weller Burlington Lift Bridge St. Catharines / Niagara District Airport Southeast Shoal Point Pelee Vineland Station Welland-Pelham Erieau Windsor Airport Port Colborne Killarney South Georgian Bay - 45143 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Lake St Clair - 45147 South Lake Huron - 45149 Sault Ste. Marie Airport Lake Simcoe - 45151 Collingwood Greater Sudbury Airport North Bay Airport Kingston Airport Peterborough Municipal Airport Grenadier Island Port Colborne - 45142 Great Duck Island Ajax - 45159 Gore Bay-Manitoulin Airport North Channel - 45154 Lake Nipissing - 45152
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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 03:00 AM EST 09 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 3:00 AM EST 9 November 2025 Today Tonight and Monday At 3:00 a.m. EST today quasi-stationary ridge located on a line
east-west over northern Ontario.

At 3:00 a.m. EST today low 1007 mb located over southern Indiana.
By 3:00 a.m. EST Monday low 1006 mb located over the Eastern
Seaboard.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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