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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 01 June 2025

Today Tonight and Monday.

Strong wind warning in effect.

Wind northwest 10 knots increasing to northwest 15 early this morning and to west 20 this afternoon. Wind diminishing to west 15 this evening and to west 10 near midnight. Wind backing to southwest 10 near noon Monday.

Waves

Issued 03:00 AM EDT 01 June 2025
Today Tonight and Monday. Waves 0.5 to 1 metre subsiding to 0.5 or less near midnight.

Extended Forecast

Issued 03:00 AM EDT 01 June 2025
Tuesday Wind light increasing to south 20 knots late in the day.
Wednesday Wind southwest 20 knots diminishing to light.
Thursday Wind light.

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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 16 May 2025 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Georgian Bay

Issued 03:00 AM EDT 01 June 2025

'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 3:00 AM EDT 1 June 2025 Today Tonight and Monday At 3:00 a.m. EDT today low 982 mb located northwest of New
Brunswick.
By 3:00 a.m. EDT Monday departing low 994 mb located over western
Labrador.

At 3:00 a.m. EDT today ridge located on a line north-south over
western Lake Superior.
By 3:00 a.m. EDT Monday ridge located on a line north-south over
North Channel.

By 3:00 a.m. EDT Monday approaching trough located on a line
northeast-southwest over North Dakota.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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