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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 09 March 2026

Tonight and Tuesday.

Wind southwest 20 knots becoming north 20 this evening then diminishing to northeast 10 near midnight. Wind increasing to northeast 15 early Tuesday morning and to northeast 20 Tuesday afternoon. Wind increasing to northeast 25 Tuesday evening.

Scattered showers Tuesday.

Waves

Issued 06:30 PM EDT 09 March 2026
Tonight and Tuesday. Over open water waves 0.5 metres or less building to 1 to 1.5 Tuesday evening.

Extended Forecast

Issued 06:30 PM EDT 09 March 2026
Wednesday Wind northeast 25 knots backing to northwest 30 late in the day.
Thursday Wind northwest 30 knots diminishing to northwest 15.
Friday Wind southeast 25 knots increasing to west 35 late in the day.

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

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

Ice Forecasts

Lake Huron

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.

Ice Forecasts

Lake Michigan

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 9 March 2026 Tonight and Tuesday At 6:30 p.m. EDT tonight departing low 990 mb located over northern
Quebec.

By 6:30 p.m. EDT Tuesday approaching low 998 mb located over
eastern Nebraska.

At 6:30 p.m. EDT tonight building high located over northern
Ontario.
By 6:30 p.m. EDT Tuesday departing high 1031 mb located over
northeastern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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