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Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 23 April 2025

Today Tonight and Thursday.

Wind light becoming southeast 10 knots this evening then increasing to southeast 15 near midnight. Wind diminishing to southwest 10 Thursday morning then becoming variable 10 near noon Thursday. Wind becoming east 10 Thursday evening.

Scattered showers overnight and Thursday morning. Fog patches forming Thursday morning.

Waves

Issued 03:00 AM EDT 23 April 2025
Today Tonight and Thursday. Waves 0.5 metres or less building to 0.5 to 1 overnight then subsiding to 0.5 or less Thursday morning.

Extended Forecast

Issued 03:00 AM EDT 23 April 2025
Friday Wind east 15 knots.
Saturday Wind north 20 knots.
Sunday Wind light.

Ice Forecast*

Issued 12:00 PM EDT 22 April 2025 Today Tonight and Wednesday Open water except 2 tenths thick lake ice near parts of the northern shore.

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

 

[ Canadian Ice Service ]

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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 22 April 2025 Today Tonight and Wednesday

Ice Coverage

Open water except 2 tenths thick lake ice near parts of the northern
shore.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 23 April 2025 Today Tonight and Thursday At 3:00 a.m. EDT today departing low 1012 mb located over central
Quebec.

At 3:00 a.m. EDT today ridge located from Sudbury to Lake Ontario.
By 3:00 a.m. EDT Thursday ridge located from James Bay to the
St. Lawrence River.

At 3:00 a.m. EDT today weakening low 1012 mb located near Lake of
the Woods.
By 3:00 a.m. EDT Thursday weakening low 1020 mb located north of
Lake Superior.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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