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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 30 April 2025

Tonight and Thursday.

Wind light becoming east 10 knots early Thursday morning then increasing to east 15 near noon Thursday. Wind backing to northeast 20 Thursday evening.

Showers and fog patches Thursday afternoon and evening.

Waves

Issued 06:30 PM EDT 30 April 2025
Tonight and Thursday. Waves 0.5 metres or less building to 0.5 to 1 Thursday afternoon and to 1 to 1.5 Thursday evening.

Extended Forecast

Issued 06:30 PM EDT 30 April 2025
Friday Wind southeast 20 knots veering to southwest 20 in the morning then diminishing to light late in the day.
Saturday Wind light becoming northwest 15 knots late in the day.
Sunday Wind light becoming northeast 15 knots late in the day.

Ice Forecast*

Issued 12:00 PM EDT 30 April 2025 Today Tonight and Thursday Open water.

*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 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
Legend:
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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 30 April 2025 Today Tonight and Thursday

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 30 April 2025 Tonight and Thursday At 6:30 p.m. EDT tonight high 1022 mb located over Georgian Bay.
By 6:30 p.m. EDT Thursday departing high 1018 mb located over
eastern Quebec.

By 6:30 p.m. EDT Thursday approaching low 1002 mb located over
Lower Michigan.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Marine Weather for Canada

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