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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 22 March 2025

Today Tonight and Sunday.

Wind north 25 knots backing to northwest 20 near noon then diminishing to northwest 15 early this evening. Wind diminishing to north 10 late this evening then becoming light late overnight. Wind increasing to southeast 15 near noon Sunday and to southeast 20 Sunday evening.

Risk of freezing spray late this morning and this afternoon.

Waves

Issued 10:30 AM EDT 22 March 2025
Today Tonight and Sunday. Over open water waves 1.5 metres subsiding to 0.5 to 1 this afternoon and to 0.5 this evening. Waves subsiding to less than 0.5 early Sunday morning then building to 0.5 to 1 Sunday afternoon.

Extended Forecast

Issued 03:00 AM EDT 22 March 2025
Monday Wind southeast 25 knots veering to southwest 20 in the morning.
Tuesday Wind northwest 20 knots diminishing to light late in the day.
Wednesday Wind east 15 knots becoming northwest 15.

Ice Forecast*

Issued 12:00 PM EDT 22 March 2025 Today Tonight and Sunday 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 Erie and Lake Ontario 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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land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 22 March 2025 Today Tonight and Sunday

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 10:30 AM EDT 22 March 2025 Today Tonight and Sunday At 10:30 a.m. EDT today cold front located on a line
northeast-southwest over eastern Ontario.
By 10:30 a.m. EDT Sunday departing cold front located on a line
northeast-southwest over the Gulf of St. Lawrence.

At 10:30 a.m. EDT today ridge located on a line north-south over
western Lake Superior.
By 10:30 a.m. EDT Sunday ridge located on a line north-south over
Lake Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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