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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 11 May 2026

Tonight and Tuesday.

Strong wind warning in effect.

Wind west 15 knots diminishing to west 10 this evening then becoming light near midnight. Wind becoming variable 10 near noon Tuesday then increasing to southeast 20 Tuesday evening.

Periods of rain Tuesday evening.

Waves

Issued 06:30 PM EDT 11 May 2026
Tonight and Tuesday. Waves 0.5 to 1 metre subsiding to 0.5 or less near midnight then building to 0.5 to 1 Tuesday evening.

Extended Forecast

Issued 06:30 PM EDT 11 May 2026
Wednesday Wind southeast 25 knots diminishing to northeast 15 in the morning.
Thursday Wind northwest 15 knots diminishing to light.
Friday Wind light.

Ice Forecast*

Issued 12:00 PM EDT 11 May 2026 Today Tonight and Tuesday Ice free.

*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
Legend:
buoy Buoy
land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 11 May 2026 Today Tonight and Tuesday

Ice Coverage

Ice free.

Warnings

Warnings (In effect)

Strong wind warning in effect

Northern Georgian Bay

Issued 6:30 PM EDT 11 May 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 11 May 2026 Tonight and Tuesday At 6:30 p.m. EDT tonight ridge located on a line north-south over
eastern Lake Superior.
By 6:30 p.m. EDT Tuesday ridge located on a line north-south
over Quebec.

At 6:30 p.m. EDT tonight low 1002 mb located over southeastern
Saskatchewan.
By 6:30 p.m. EDT Tuesday low 1003 mb located over eastern Wisconsin.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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