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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 11 March 2026

Today Tonight and Thursday.

Wind northeast 25 knots backing to northwest 20 early this evening then diminishing to northwest 15 near noon Thursday. Wind diminishing to northwest 10 Thursday evening.

Freezing rain changing to freezing drizzle and fog patches this morning then to freezing rain this afternoon. Periods of snow this evening and ending Thursday morning.

Waves

Issued 03:00 AM EDT 11 March 2026
Today Tonight and Thursday. Mainly ice covered.

Extended Forecast

Issued 03:00 AM EDT 11 March 2026
Friday Wind light increasing to southeast 30 knots in the afternoon then backing to northeast 25 late in the day.
Saturday Wind north 25 knots diminishing to light late in the day.
Sunday Wind light increasing to northeast 35 knots late in the day.

Ice Forecast*

Issued 12:00 PM EDT 10 March 2026 Today Tonight and Wednesday 2 tenths thick lake ice except 9 tenths thick lake ice in the northeastern section. Consolidated thick lake ice along parts of the 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 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

Issued 12:00 PM EDT 10 March 2026 Today Tonight and Wednesday

Ice Coverage

2 tenths thick lake ice except 9 tenths thick lake ice in the
northeastern section. Consolidated thick lake ice along parts of the
shores.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 11 March 2026 Today Tonight and Thursday At 3:00 a.m. EDT today deepening low 1003 mb located over northern
Illinois.
By 3:00 a.m. EDT Thursday low 988 mb located over southern Quebec.

At 3:00 a.m. EDT today departing high 1031 mb located east of
James Bay.

By 3:00 a.m. EDT Thursday ridge located on a line north-south over
northwestern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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