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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 25 April 2025

Today Tonight and Saturday.

Wind northeast 15 knots backing to north 20 late overnight then to northwest 25 near noon Saturday.

Showers. Risk of thunderstorms this afternoon and this evening. Fog patches dissipating Saturday morning.

Waves

Issued 10:30 AM EDT 25 April 2025
Today Tonight and Saturday. Waves 0.5 to 1 metre building to 1.5 late overnight.

Extended Forecast

Issued 03:00 AM EDT 25 April 2025
Sunday Wind northwest 20 knots diminishing to light in the morning.
Monday Wind light becoming southeast 15 knots late in the day.
Tuesday Wind southwest 25 knots veering to northwest 25 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 24 April 2025 Today Tonight and Friday Open water except 1 tenth thick lake ice along parts of the northern shore.

*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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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 24 April 2025 Today Tonight and Friday

Ice Coverage

Open water except 1 tenth thick lake ice along parts of the northern
shore.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 24 April 2025 Tonight and Friday At 6:30 p.m. EDT tonight departing low 1020 mb located over
eastern Ontario.

At 6:30 p.m. EDT tonight quasi-stationary ridge located on a line
northeast-southwest over northern Ontario.

By 6:30 p.m. EDT Friday approaching low 1015 mb located near Lake
St. Clair.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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