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Lake St. Clair

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 05 May 2025

Today Tonight and Tuesday.

Wind northeast 15 knots diminishing to east 10 early this morning then becoming light this afternoon. Wind becoming south 15 Tuesday morning then diminishing to light Tuesday afternoon.

Showers. Risk of thunderstorms tonight. Fog patches forming near midnight and dissipating near noon Tuesday.

Waves

Issued 03:00 AM EDT 05 May 2025
Today Tonight and Tuesday. Waves 0.5 metres or less.

Extended Forecast

Issued 03:00 AM EDT 05 May 2025
Wednesday Wind light becoming north 15 knots late in the day.
Thursday Wind north 15 knots.
Friday Wind light.

Ice Forecast*

Issued 12:00 PM EDT 4 May 2025 Today Tonight and Monday Ice free.

*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 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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buoy Buoy
land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 4 May 2025 Today Tonight and Monday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 5 May 2025 Today Tonight and Tuesday At 3:00 a.m. EDT today ridge from 1028 mb high located on a line
east-west over eastern Lake Superior.
By 3:00 a.m. EDT Tuesday ridge from 1035 mb high located on a line
east-west over northeastern Ontario.

At 3:00 a.m. EDT today low 1010 mb located over southern Indiana.
By 3:00 a.m. EDT Tuesday low 1011 mb located over southern Lake
Huron.

At 3:00 a.m. EDT today trough located on a line northeast-southwest
over Manitoba.
By 3:00 a.m. EDT Tuesday trough located from North Dakota to
James Bay.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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