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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 21 March 2025

Tonight and Saturday.

Wind southwest 20 knots veering to northwest 25 early Saturday morning then diminishing to north 10 Saturday evening.

Scattered showers beginning this evening changing to scattered flurries overnight and ending Saturday morning.

Risk of freezing spray Saturday morning and afternoon.

Waves

Issued 06:30 PM EDT 21 March 2025
Tonight and Saturday. Over open water waves 1 to 1.5 metres subsiding to 0.5 to 1 Saturday afternoon and to 0.5 Saturday evening.

Extended Forecast

Issued 06:30 PM EDT 21 March 2025
Sunday Wind light increasing to southeast 20 knots late in the day.
Monday Wind southeast 25 knots veering to southwest 20.
Tuesday Wind northwest 20 knots diminishing to light late in the day.

Ice Forecast*

Issued 12:00 PM EDT 21 March 2025 Today Tonight and Saturday Open water except 5 tenths medium lake ice including 1 tenth thick lake ice in the northeastern section. Consolidated thick lake ice along the northeastern shores.

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

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

Ice Forecasts

Issued 12:00 PM EDT 21 March 2025 Today Tonight and Saturday

Ice Coverage

Open water except 5 tenths medium lake ice including 1 tenth thick
lake ice in the northeastern section. Consolidated thick lake ice
along the northeastern shores.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 21 March 2025 Tonight and Saturday At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest
over eastern Ontario.
By 6:30 p.m. EDT Saturday ridge located on a line north-south over
Nova Scotia.

At 6:30 p.m. EDT tonight cold front located from James Bay to
Lake Superior.
By 6:30 p.m. EDT Saturday cold front located on a line
northeast-southwest over New York State.

At 6:30 p.m. EDT tonight ridge located on a line north-south
over Manitoba.
By 6:30 p.m. EDT Saturday ridge located on a line north-south over
eastern Lake Superior.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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