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Northern Georgian Bay

Forecast

Marine Forecast

Issued 03:00 AM EDT 10 March 2026

Today Tonight and Wednesday.

Wind northeast 15 knots increasing to northeast 20 early this morning and to northeast 25 this evening. Wind backing to northwest 20 Wednesday evening.

Scattered flurries beginning this morning changing to periods of freezing rain overnight then to periods of rain or periods of freezing rain near noon Wednesday. Flurries Wednesday evening.

Waves

Issued 03:00 AM EDT 10 March 2026
Today Tonight and Wednesday. Over open water waves 0.5 to 1 metre.

Extended Forecast

Issued 03:00 AM EDT 10 March 2026
Thursday Wind northwest 25 knots diminishing to northwest 15 in the afternoon.
Friday Wind southeast 30 knots increasing to southwest 35 late in the day.
Saturday Wind southwest 35 knots diminishing to light late in the day.

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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 10 March 2026 Today Tonight and Wednesday By 3:00 a.m. EDT Wednesday approaching low 1002 mb located over
Iowa.

At 3:00 a.m. EDT today high 1021 mb located over southeastern
Manitoba.
By 3:00 a.m. EDT Wednesday high 1033 mb located east of James Bay.

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