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Southern Lake Huron

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 06 July 2026

Today Tonight and Tuesday.

Wind northeast 10 knots increasing to north 15 this afternoon then diminishing to north 10 near midnight. Wind becoming light Tuesday evening.

Waves

Issued 10:30 AM EDT 06 July 2026
Today Tonight and Tuesday. Waves 0.5 metres or less building to 0.5 to 1 early this evening then subsiding to 0.5 or less late overnight.

Extended Forecast

Issued 03:00 AM EDT 06 July 2026
Wednesday Wind light.
Thursday Wind southwest 15 knots diminishing to light.
Friday Wind light.

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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 17 May 2026 Forecasts have ended for the season.

Ice Forecasts

Lake Michigan

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 6 July 2026 Today Tonight and Tuesday At 10:30 a.m. EDT today low 1013 mb located south of Lake Erie.
By 10:30 a.m. EDT Tuesday trough located on a line north-south
over western Pennsylvania.

At 10:30 a.m. EDT today low 1010 mb located over central Manitoba.
By 10:30 a.m. EDT Tuesday low 991 mb located over Hudson Bay.

At 10:30 a.m. EDT today quasi-stationary ridge located on a line
northeast-southwest over northeastern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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