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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 22 June 2025

Tonight and Monday.

Wind southeast 10 knots increasing to southwest 15 late overnight. Wind southwest 15 Monday.

Fog patches dissipating near noon Monday.

Waves

Issued 06:30 PM EDT 22 June 2025
Tonight and Monday. Waves 0.5 metres or less building to 0.5 to 1 early Monday morning.

Extended Forecast

Issued 06:30 PM EDT 22 June 2025
Tuesday Wind west 15 knots diminishing to light late in the day.
Wednesday Wind light.
Thursday Wind light becoming east 15 knots late in the day.

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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 22 June 2025 Tonight and Monday At 6:30 p.m. EDT tonight quasi-stationary ridge located on a line
northeast-southwest over the Eastern Seaboard.

At 6:30 p.m. EDT tonight low 996 mb located over western Minnesota.
By 6:30 p.m. EDT Monday trough from low located on a line east-west
over northern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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