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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 07 March 2026

Tonight and Sunday.

Wind west 20 knots diminishing to west 15 near midnight then backing to southwest 15 to 20 early Sunday morning. Wind becoming southwest 20 near noon Sunday then backing to south 20 Sunday evening.

Scattered showers changing to flurries overnight and ending Sunday morning. Fog patches dissipating this evening.

Waves

Issued 06:30 PM EST 07 March 2026
Tonight and Sunday. Over open water waves 0.5 to 1 metre.

Extended Forecast

Issued 06:30 PM EST 07 March 2026
Monday Wind southwest 20 to 25 knots diminishing to light late in the day.
Tuesday Wind variable 15 knots increasing to northeast 25 late in the day.
Wednesday Wind northeast 25 knots backing to northwest 20 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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buoy Buoy
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 EST 7 March 2026 Tonight and Sunday At 6:30 p.m. EST tonight trough located on a line
northeast-southwest over Georgian Bay.
By 6:30 p.m. EDT Sunday trough located on a line northeast-southwest
over Nova Scotia.

At 6:30 p.m. EST tonight ridge located from James Bay to Lake
Superior.
By 6:30 p.m. EDT Sunday ridge located from Quebec to Pennsylvania.

At 6:30 p.m. EST tonight low 988 mb located over northern Manitoba.
By 6:30 p.m. EDT Sunday low 984 mb located over James Bay.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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